Materialien:<\/strong> balloon, string, straw, tape, two chairs<\/p>\n\n\n\nStretch a string tightly between two chairs and thread a plastic straw through it. Blow up a balloon (don\u2019t tie it), tape it to the straw, and let it go. The escaping air propels the balloon forward, creating an instant giggle-worthy STEM moment. Kids love the \u201czoom,\u201d and you get an easy, visual way to show how air can create motion. For extra fun, race two balloons side-by-side or try different balloon shapes to see which goes further.<\/p>\n\n\n\n
Ice Cube Melt Race<\/h3>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> 3 ice cubes, metal tray, wooden board, plastic plate, stopwatch or timer<\/p>\n\n\n\nPlace each ice cube on a different surface\u2014like a metal tray, a wood block, and a plastic plate. Start the timer and observe which melts fastest. Encourage kids to guess first, then test. This quick experiment introduces early learners to the concept of heat transfer and gets them thinking about how different materials interact with temperature. Bonus: no cleanup beyond a few drops of water!<\/p>\n\n\n\n
Color Swirl in Milk<\/h3>\n\n\n\n Age:<\/strong> 2\u20135Materialien:<\/strong> shallow dish, whole milk, food coloring, dish soap, cotton swab<\/p>\n\n\n\nPour milk into a shallow dish, add drops of food coloring, and touch the center with a soap-dipped cotton swab. The colors suddenly swirl and dance away from the soap! This is a perfect sensory STEM activity for toddlers and preschoolers, introducing them to cause and effect, surface tension, and color mixing\u2014all in one magical minute. It\u2019s safe, fast, and repeatable.<\/p>\n\n\n\n
Paper Bridge Challenge<\/h3>\n\n\n\n Age:<\/strong> 5\u20138Materialien:<\/strong> paper, 2 books, coins or small toys<\/p>\n\n\n\nLay a piece of paper flat across two books to form a bridge. Ask: How many coins can it hold before collapsing? Now fold the paper accordion-style and try again. It\u2019s amazing how such a small design change makes a big difference! This activity teaches kids about structure, weight distribution, and basic engineering\u2014all in less than 10 minutes.<\/p>\n\n\n\n
Pom-Pom Ramp Races<\/h3>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> cardboard pieces or wooden planks, pom-poms or toy cars, blocks or books for height<\/p>\n\n\n\nBuild simple ramps by leaning cardboard against books or blocks. Race pom-poms down each one, trying different angles. Which ramp is fastest? Which is slowest? This playful challenge helps kids explore gravity, speed, and incline\u2014all while crawling around and giggling on the floor. Add a stopwatch to bring in early math and measurement concepts.<\/p>\n\n\n\n
Magnet Mystery Sort<\/h3>\n\n\n\n Age:<\/strong> 4\u20137Materialien:<\/strong> magnet wand, small items like paper clips, keys, buttons, coins, rubber bands, toy parts<\/p>\n\n\n\nGather small items from around the room and let kids predict whether each one will stick to a magnet. Then test them! Separate items into \u201cmagnetic\u201d and \u201cnot magnetic\u201d piles. This quick activity sparks curiosity and helps build early classification and observational skills. It\u2019s also a great introduction to how magnets interact with different materials\u2014and a favorite for independent play stations.<\/p>\n\n\n\n
Float or Sink?<\/h3>\n\n\n\n Age:<\/strong> 2\u20135Materialien:<\/strong> large bowl or tub of water, variety of small safe objects (toy block, spoon, rock, leaf, plastic cap)<\/p>\n\n\n\nFill a tub with water and invite your child to drop in one object at a time. Ask them to guess: Will it float or sink? Then test! Talk about size, weight, and shape. This is a fantastic water-based activity for toddlers and preschoolers that combines sensory play with basic science thinking. Super easy to set up, endlessly repeatable, and great for group activities too.<\/p>\n\n\n\n\nAt\u2011Home STEM Activities for Kids<\/h2>\n\n\n\n You don\u2019t need a science lab to do meaningful STEM activities for kids. With just a few everyday materials, kids can build, test, and explore right at the kitchen table or in the living room. These at-home STEM activities are simple to set up, easy to clean up, and packed with learning\u2014perfect for curious toddlers, preschoolers, and elementary kids alike.<\/p>\n\n\n\n
Rainbow Walking Water<\/h3>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> 6 clear cups, water, paper towels, food coloring (red, yellow, blue)<\/p>\n\n\n\nFill 3 cups with water and add food coloring\u2014red, yellow, and blue. Arrange the cups in a circle, alternating with 3 empty cups. Connect each cup with a folded paper towel strip. Over time, water “walks” through the paper and mixes in the empty cups, forming new colors. This colorful experiment introduces kids to absorption, color blending, and basic water movement\u2014all with zero mess and lots of \u201cwow!\u201d<\/p>\n\n\n\n
DIY Windmill Spinner<\/h3>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> cardstock or thick paper, pencil with eraser, push pin or thumbtack, scissors, ruler<\/p>\n\n\n\nCut a square from cardstock, snip diagonal lines from each corner toward the center, and fold alternate corners inward to form a pinwheel. Secure it to the pencil\u2019s eraser with a tack. Blow on it or take it outside on a breezy day. This simple build teaches kids about wind energy, rotation, and engineering\u2014all with materials found in most homes or classrooms.<\/p>\n\n\n\n
Grow a Bean in a Bag<\/h3>\n\n\n\n Age:<\/strong> 3\u20137Materialien:<\/strong> ziplock bag, paper towel, water, dry bean (like a lima bean), tape<\/p>\n\n\n\nWet a paper towel and place it inside a ziplock bag with a bean on top. Tape the bag to a sunny window. Within days, kids can watch the bean swell, sprout roots, and shoot up a stem. It\u2019s a wonderful way to explore plant life cycles and get kids excited about nature\u2014even from indoors.<\/p>\n\n\n\n
Invisible Ink with Lemon Juice<\/h3>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> lemon juice, Q-tip, white paper, lamp or hair dryer<\/p>\n\n\n\nDip a Q-tip into lemon juice and write a message on the paper. Let it dry, then reveal the secret by gently heating the paper with a lamp or blow dryer. The heat oxidizes the lemon juice, making the writing visible. Kids love the mystery, and it\u2019s a clever way to introduce basic chemistry concepts.<\/p>\n\n\n\n
Sink or Float Sorting Station<\/h3>\n\n\n\n Age:<\/strong> 2\u20135Materialien:<\/strong> tub or bowl of water, everyday items (sponge, rock, plastic spoon, key, paper clip, rubber duck, etc.)<\/p>\n\n\n\nGather random household objects and let your child guess whether each one will sink or float. Then test them one by one. This classic sensory science activity helps young children build observation skills and vocabulary while having fun with water play.<\/p>\n\n\n\n
Build a Marble Maze with LEGO<\/h3>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> LEGO bricks and baseplate, 1 marble or small bead<\/p>\n\n\n\nCreate walls and paths on the baseplate to guide the marble from start to finish. Kids can design their own layouts, test them, then tweak and rebuild. It\u2019s an ideal quiet-time STEM challenge that boosts spatial awareness, logical thinking, and creativity\u2014right on the living room floor.<\/p>\n\n\n\n
Homemade Butter in a Jar<\/h3>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> small jar with lid, heavy cream, marble (optional), crackers for tasting<\/p>\n\n\n\nPour cream into the jar, add a marble (for agitation), and shake it vigorously for 5\u201310 minutes. The cream thickens, separates, and becomes soft butter. Spread it on crackers and enjoy! Kids learn about physical change and emulsification\u2014all while using their muscles and patience.<\/p>\n\n\n\n
Straw Structures Building Challenge<\/h3>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> plastic straws, tape or pipe cleaners, small action figure or toy animal<\/p>\n\n\n\nChallenge your child to build a structure strong enough to hold a small toy figure using only straws and tape. They can experiment with triangles, squares, or any shape they like. It\u2019s a great at-home engineering challenge that develops design thinking, fine motor skills, and perseverance. Plus, no mess\u2014just imagination and lots of creative problem-solving.<\/p>\n\n\n\n\nSTEM Activities by Season<\/h2>\n\n\n\n Each season brings new weather, nature, and experiences\u2014and that means new ways to explore STEM! Whether you’re planting seeds in spring, exploring shadows in summer, collecting leaves in fall, or experimenting with ice in winter, these seasonal STEM activities for kids connect science and play to the world around them. Seasonal themes help children observe, ask questions, and learn in real time\u2014right from their backyard, classroom, or campsite.<\/p>\n\n\n\n
Spring STEM Activities for Kids<\/h3>\n\n\n\n Spring is full of natural change, which makes it a perfect season for hands-on discovery. From blooming flowers to rainy weather, these STEM activities for kids bring the outdoors in\u2014or take learning outside to explore life cycles, weather, and more. Each project is easy to set up, uses simple materials, and fits beautifully into a spring theme for preschool and early elementary learners.<\/p>\n\n\n\n
Rain Gauge Tracker<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> clear plastic cup or jar, ruler, marker, tape, notebook or printable chart<\/p>\n\n\n\nUse a marker to label centimeter or inch marks on the cup. Set it outside in an open area, and check it after each rain. Kids record the water level over several days and compare results. This is a great way to explore weather patterns, measurement, and simple data collection with just one jar and a ruler.<\/p>\n\n\n\n
Seed Germination in a Bag<\/h4>\n\n\n\n Age:<\/strong> 3\u20137Materialien:<\/strong> ziplock bag, wet paper towel, beans or peas, tape<\/p>\n\n\n\nPlace the damp paper towel inside the bag with the seed pressed against it. Tape the bag to a sunny window and watch as roots and stems appear over the next few days. A springtime favorite, this activity lets children observe plant growth up close without any mess.<\/p>\n\n\n\n
Flower Dissection & Diagram<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> real flowers (lily or daisy work well), magnifier, tweezers, white paper, glue stick, markers<\/p>\n\n\n\nCarefully take apart a flower and place each piece on paper\u2014petals, stamen, stem. Help children label each part and talk about its role in the plant’s life cycle. This hands-on biology exploration is perfect for connecting nature and science in a meaningful way.<\/p>\n\n\n\n
Water Transport with Celery<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> celery stalks with leaves, clear cups, food coloring, water<\/p>\n\n\n\nFill cups with water and add food coloring. Place celery in the cups and observe over several hours. The color slowly moves up the stalk and into the leaves, showing how plants absorb water. A classic spring science project that\u2019s colorful, visual, and always gets kids talking.<\/p>\n\n\n\n
Schmetterlingssymmetrie-Malerei<\/h4>\n\n\n\n Age:<\/strong> 2\u20135Materialien:<\/strong> construction paper, paint, paintbrushes<\/p>\n\n\n\nFold a piece of paper in half, open it, and have children paint on one side. Fold it again and press gently. Open to reveal a perfectly symmetrical butterfly shape. It\u2019s a creative STEM art project that explores symmetry and pattern recognition\u2014perfect for little learners during spring.<\/p>\n\n\n\n\nSummer STEM Activities for Kids<\/h3>\n\n\n\n Summer is messy, sunny, and full of energy\u2014just like the best science projects. These STEM activities for kids take advantage of warm weather, water play, and outdoor time. They’re simple, open-ended, and perfect for curious hands that like to build, splash, and explore.<\/p>\n\n\n\n
DIY Solar Oven S’mores<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> pizza box, aluminum foil, black paper, plastic wrap, tape, marshmallows, graham crackers, chocolate<\/p>\n\n\n\nTake a sunny afternoon and turn it into a science snack session. Line the inside of a pizza box with foil and black paper. Set up your s\u2019mores, cover with plastic wrap, and angle the lid to reflect the sun\u2019s heat. After 15\u201330 minutes, gooey marshmallows and melted chocolate await. Kids learn about solar energy, heat absorption, and patience\u2014all while making their own treat.<\/p>\n\n\n\n
Sponge Tower Water Race<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> kitchen sponges, buckets or bowls, water<\/p>\n\n\n\nCut sponges into squares and stack them into towers. Place one end in a water bucket and time how long it takes to fully absorb water and fall over. Kids love the drama of the “sponge crash,” and it sneakily teaches about absorption, gravity, and timing.<\/p>\n\n\n\n
Ice Cube Melt Maze<\/h4>\n\n\n\n Age:<\/strong> 4\u20137Materialien:<\/strong> ice cubes, tray with edges, foil, blocks or small toys to make maze walls<\/p>\n\n\n\nCreate a simple maze on a tray using foil or small toys. Let the ice cube travel from one end to the other, pushed only by melting and tilting the tray. Kids can try adding salt or using droppers of warm water to guide their ice cube. A cool, hands-on experiment in problem-solving and states of matter.<\/p>\n\n\n\n
Nature Sound Mapping Walk<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> clipboard, paper, pencil, backyard or park<\/p>\n\n\n\nHead outdoors and listen. Every time your child hears a bird, insect, wind, or splash, they draw a symbol or mark it on a “sound map.” This surprisingly calming STEM activity builds observation skills, environmental awareness, and spatial thinking\u2014all through listening.<\/p>\n\n\n\n
Pool Noodle Engineering<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> pool noodles, skewers or sticks, scissors, tape, marbles or small balls<\/p>\n\n\n\nCut pool noodles into sections and let kids design ball runs, ramps, or bridges. You can use them on stairs, tables, or in the yard. They\u2019ll test gravity, angles, and structural strength while having a blast. No pool needed\u2014just creativity and noodle power!<\/p>\n\n\n\n\nFall STEM Activities for Kids<\/h3>\n\n\n\n Fall offers colorful leaves, pumpkins, and changing weather\u2014perfect for seasonal discovery. These STEM activities for kids help children connect with nature while exploring science, engineering, and observation skills.<\/p>\n\n\n\n
Leaf Color Chromatography<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> fresh leaves, rubbing alcohol, glass jar, coffee filter, hot water, spoon<\/p>\n\n\n\nChop the leaves and place them into the jar with rubbing alcohol. Mash them a little with a spoon. Set the jar in warm water (in a bowl or zip bag) for 30 minutes. Then insert a coffee filter strip into the liquid. Over time, you’ll see different pigments rising on the filter, revealing the colors hiding inside green leaves. It\u2019s a brilliant way to explain why leaves change color in fall.<\/p>\n\n\n\n
Apple Stack Engineering Challenge<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> apples, knife (for adults), toothpicks, tray<\/p>\n\n\n\nSlice apples into flat discs and challenge kids to stack and connect them using toothpicks. They can build towers, bridges, or try balancing objects on top. It’s a simple introduction to balance, structure, and spatial reasoning\u2014using one of fall’s most iconic fruits.<\/p>\n\n\n\n
Pumpkin Sink or Float<\/h4>\n\n\n\n Age:<\/strong> 2\u20135Materialien:<\/strong> small pumpkin, tub of water, towel<\/p>\n\n\n\nAsk children to guess: Will the pumpkin sink or float? Then test it in water. Repeat with different sizes or even a hollowed-out pumpkin. This sensory-friendly STEM activity encourages prediction, hands-on testing, and introduces buoyancy in a memorable way.<\/p>\n\n\n\n
Acorn Catapult Build<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> popsicle sticks, rubber bands, plastic spoon, tape, acorns<\/p>\n\n\n\nUse sticks and rubber bands to build a simple catapult. Load an acorn into the spoon and launch it. Try adjusting the lever or angle to change how far it goes. It\u2019s a fun way to explore force and motion while using natural materials found in your backyard or park.<\/p>\n\n\n\n
Measuring Leaves Activity<\/h4>\n\n\n\n Age:<\/strong> 3\u20137Materialien:<\/strong> leaves of various sizes, ruler, string, tape<\/p>\n\n\n\nGather leaves of different sizes and shapes. Let kids measure their length, width, or even perimeter using a string and a ruler. Record the data or sort them by size. This introduces measurement, comparison, and basic math through nature exploration.<\/p>\n\n\n\n\nWinter STEM Activities for Kids<\/h3>\n\n\n\n Winter\u2019s cold temperatures, ice, and seasonal celebrations offer plenty of STEM inspiration. These STEM activities for kids blend seasonal themes with science, engineering, and sensory fun\u2014ideal for indoor learning during chilly days.<\/p>\n\n\n\n
Snowstorm in a Jar<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> clear jar, baby oil, white paint, Alka-Seltzer, water, glitter (optional)<\/p>\n\n\n\nFill the jar mostly with baby oil. In a separate cup, mix white paint with water, then pour it slowly into the jar. Add glitter if you like. Finally, drop in half an Alka-Seltzer tablet and watch the swirling snowstorm appear. A winter-themed chemical reaction that’s calm and mesmerizing.<\/p>\n\n\n\n
Ice Tower Building<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> ice cubes, salt, tray, tongs<\/p>\n\n\n\nGive kids a pile of ice cubes and let them try to stack them into a tower. It\u2019s slippery and hard at first\u2014until they discover that a pinch of salt melts the ice slightly and refreezes it into a solid bond. This experiment explores freezing, melting, and physical change while encouraging persistence and problem-solving.<\/p>\n\n\n\n
Snowflake Symmetry Art<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> paper, scissors, markers or crayons<\/p>\n\n\n\nFold paper and cut shapes to make paper snowflakes. Then unfold and decorate each side to highlight symmetry. Kids explore patterns, bilateral symmetry, and fine motor skills in a calm, wintery activity that doubles as decoration.<\/p>\n\n\n\n
Frozen Bubbles Experiment<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> bubble solution, straw or wand, freezer or cold outdoor temps<\/p>\n\n\n\nBlow bubbles outside or into a freezer-safe container. In cold weather, bubbles can freeze and create beautiful icy patterns. This activity explores freezing points, air temperature, and surface tension\u2014and it looks magical when captured in photos.<\/p>\n\n\n\n
Gingerbread House Structural Test<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> graham crackers, icing, candy, plates, toothpicks (optional)<\/p>\n\n\n\nLet kids build gingerbread-style houses with crackers and icing. Then test them: can they withstand a \u201csnowstorm\u201d (fan or blower)? Or support a \u201croof\u201d? Turn a holiday tradition into an engineering design challenge by asking kids to plan, test, and rebuild.<\/p>\n\n\n\n\nHoliday-Themed STEM Activities for Kids<\/h2>\n\n\n\n Holidays and special events are the perfect excuse to add some extra sparkle\u2014and learning\u2014to your child\u2019s routine. These STEM activities for kids are built around seasonal celebrations like Halloween, Christmas, Earth Day, and more. With themed materials and playful challenges, they turn classroom parties or family days into creative learning opportunities. Whether you’re carving pumpkins or dyeing Easter eggs, there\u2019s always a chance to mix science, math, and hands-on fun.<\/p>\n\n\n\n
Halloween STEM Activities for Kids<\/h3>\n\n\n\n Halloween is full of spooky fun\u2014and science! From bubbling potions to flying bats, this is the perfect holiday to mix imagination with learning. These Halloween STEM activities for kids add a little \u201cmad scientist\u201d energy to your October while teaching real-world concepts like motion, chemistry, and problem-solving.<\/p>\n\n\n\n
Pumpkin Volcano Eruption<\/h4>\n\n\n\n Age:<\/strong> 3\u20137Materialien:<\/strong> small pumpkin, baking soda, vinegar, dish soap, food coloring, tray or plate<\/p>\n\n\n\nCarve out a mini pumpkin and scoop out the inside. Fill it halfway with baking soda, add a squirt of dish soap, and a few drops of food coloring. Pour in vinegar and watch the bubbling eruption! This Halloween twist on the classic baking soda volcano lets kids explore chemical reactions in a festive way.<\/p>\n\n\n\n
Flying Bat Zip Line<\/h4>\n\n\n\n Age:<\/strong> 4\u20139Materialien:<\/strong> plastic bat toy or paper bat cutout, string, straw, tape, paperclip<\/p>\n\n\n\nAttach a string across a room like a zip line. Tape a straw to the back of the bat and thread it onto the string. Clip a paperclip to give it weight, then tilt the string and let it fly! Kids learn about gravity, incline, and friction while sending their bat soaring through the \u201chaunted air.\u201d<\/p>\n\n\n\n
Candy Corn Tower Challenge<\/h4>\n\n\n\n Age:<\/strong> 5\u20138Materialien:<\/strong> candy corn, toothpicks, plate or tray<\/p>\n\n\n\nUsing candy corn as connectors and toothpicks as beams, kids try to build the tallest freestanding tower. The sweet shapes add a tricky twist, requiring patience, fine motor skills, and a strong base. A great way to explore structural engineering with seasonal flair.<\/p>\n\n\n\n
Ghost Balloon Static Test<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> white balloon, tissue paper, marker, wool cloth or hair<\/p>\n\n\n\nDraw a ghost face on a white balloon and cut small tissue paper ghosts to lay on a flat surface. Rub the balloon on your hair or a wool cloth and hold it near the ghosts\u2014watch them \u201crise\u201d! This fun activity introduces static electricity and how charged particles can move lightweight objects.<\/p>\n\n\n\n
Glow-in-the-Dark Slime<\/h4>\n\n\n\n Age:<\/strong> 4\u20139Materialien:<\/strong> clear glue, liquid starch or saline solution, glow-in-the-dark paint or powder, mixing bowl, spoon<\/p>\n\n\n\nMix glue and glow pigment in a bowl, slowly add activator (starch or saline) until the slime forms. Turn off the lights and let it glow! This tactile Halloween favorite is perfect for talking about polymers and chemical bonding\u2014with a ghoulish twist.<\/p>\n\n\n\n
Spider Web Bridge Test<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> masking tape, small plastic spiders or toy bugs, paper strips, ruler<\/p>\n\n\n\nCreate a \u201cspider web\u201d between two chairs using masking tape. Kids design bridges or ladders out of paper strips and test how many spiders each one can hold before collapsing. A spooky-themed engineering challenge that focuses on weight distribution and creativity.<\/p>\n\n\n\n\nThanksgiving STEM Activities for Kids<\/h3>\n\n\n\n Thanksgiving is more than food and family\u2014it’s also a time to explore gratitude, nature, and hands-on creativity. These Thanksgiving STEM activities for kids bring science and engineering to the table (sometimes literally), using festive themes like turkeys, cranberries, and harvest time to spark curiosity.<\/p>\n\n\n\n
Build a Turkey Hideout<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> craft sticks, clothespins, cardboard scraps, tape, feathers, toy turkey or paper cutout<\/p>\n\n\n\nChallenge kids to design a small \u201chideout\u201d to help a turkey escape being found before Thanksgiving dinner. Using loose parts and recycled materials, they build structures that must hide the turkey completely while staying upright. It\u2019s a great introduction to creative design thinking and problem-solving.<\/p>\n\n\n\n
Cranberry Float or Sink Test<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> fresh cranberries, dried cranberries, a large bowl of water, a spoon<\/p>\n\n\n\nLet kids test which cranberries float and which sink\u2014and why! Fresh cranberries often float due to internal air pockets, while dried ones sink. Let them record results, stir, and scoop. This simple experiment helps children explore density and buoyancy with a seasonal ingredient.<\/p>\n\n\n\n
Marshmallow Corn Catapults<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> plastic spoons, popsicle sticks, rubber bands, mini marshmallows, candy corn<\/p>\n\n\n\nKids build mini catapults using spoons and sticks, then launch \u201ccorn kernels\u201d (aka marshmallows or candy corn) into a paper cup target. Adjust angle, tension, and weight to test what launches farthest. A festive intro to potential and kinetic energy that feels more like a game than a lesson.<\/p>\n\n\n\n
Pumpkin Pie Ingredient Science<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> canned pumpkin, spices (cinnamon, nutmeg), milk, sugar, mixing bowls, measuring spoons<\/p>\n\n\n\nTurn pumpkin pie making into a STEM session: let kids measure ingredients, guess proportions, and experiment with spice ratios. Optional: bake a mini pie or do a no-bake version in ramekins. This activity includes chemistry, measurement, and sensory exploration all in one.<\/p>\n\n\n\n
Thankful Feather Coding Game<\/h4>\n\n\n\n Age:<\/strong> 4\u20137Materialien:<\/strong> colored paper feathers, symbols or arrows, tape, toy figure, floor space<\/p>\n\n\n\nMake paper feathers with simple directional codes (\u2190 \u2191 \u2193 \u2192). Create a path on the floor and let kids \u201cprogram\u201d a character to move through the feathers to reach a \u201cgratitude basket.\u201d They practice sequencing, direction-following, and the early logic skills of coding\u2014Thanksgiving style.<\/p>\n\n\n\n\nChristmas STEM Activities for Kids<\/h3>\n\n\n\n The holiday season is filled with lights, colors, and cozy traditions\u2014perfect for hands-on science and playful learning. These Christmas STEM activities for kids turn the excitement of the holidays into fun opportunities to build, test, and create. Whether indoors or outside, these challenges make December both magical and meaningful.<\/p>\n\n\n\n
Gumdrop Engineering Challenge<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> gumdrops, toothpicks, tray or plate<\/p>\n\n\n\nGive kids a pile of gumdrops and toothpicks and ask them to build the tallest tree, strongest bridge, or even a star! This activity encourages structural thinking, symmetry, and creativity\u2014plus, it’s festive and sticky fun.<\/p>\n\n\n\n
Melting Snowman Science<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> baking soda, water, dish soap, vinegar, glitter (optional), small buttons or eyes<\/p>\n\n\n\nMix baking soda, water, and a bit of soap to form \u201csnowman dough.\u201d Shape small snowmen and decorate them. When kids are ready, pour vinegar over the snowmen and watch them fizz and melt. This simple acid-base reaction is always a crowd-pleaser and fits the winter theme perfectly.<\/p>\n\n\n\n
Christmas Light Circuit Craft<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> LED lights, coin batteries, copper tape, paper, tape, scissors<\/p>\n\n\n\nCreate a simple light-up Christmas card or ornament by connecting a battery to an LED with copper tape. Kids can decorate around it with drawings or glitter. It\u2019s an intro to basic circuitry, holiday-style!<\/p>\n\n\n\n
Santa\u2019s Chimney Drop Test<\/h4>\n\n\n\n Age:<\/strong> 4\u20137Materialien:<\/strong> cotton balls, paper tubes, measuring tape, stopwatch<\/p>\n\n\n\nBuild a pretend \u201cchimney\u201d from a cardboard tube. Let kids drop \u201cSanta\u201d (cotton balls) from different heights and measure how long it takes to reach the bottom. Try wrapping some in foil or cloth to see how material changes affect speed. A playful way to explore gravity, air resistance, and testing variables.<\/p>\n\n\n\n
Elf Zip Line Challenge<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> toy elf or paper elf, string, paperclip, straw, tape<\/p>\n\n\n\nJust like the Halloween bat zip line\u2014but this time with an elf! Kids create a festive zip line across the room and adjust height, angle, and materials to get their elf moving as smoothly (or fast!) as possible. A seasonal twist on an engineering classic.<\/p>\n\n\n\n\nEaster STEM Activities for Kids<\/h3>\n\n\n\n Easter brings bright colors, eggs, and endless spring inspiration\u2014making it a perfect time for hands-on STEM learning. These Easter STEM activities for kids use familiar holiday items like plastic eggs, jelly beans, and baskets to spark curiosity and creativity. Simple to set up and packed with playful learning!<\/p>\n\n\n\n
Plastic Egg Drop Challenge<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> plastic eggs, cotton balls, tissue, rubber bands, paper scraps, tape<\/p>\n\n\n\nChallenge kids to protect a plastic egg from a high drop using only the provided materials. They build a small \u201cegg protection system,\u201d drop it from shoulder height (or higher), and check if it stayed intact. A festive twist on classic egg drop engineering, teaching impact absorption and design planning.<\/p>\n\n\n\n
Jelly Bean Tower Build<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> jelly beans, toothpicks, plate or tray<\/p>\n\n\n\nLet kids construct towers, domes, or shapes using jelly beans as connectors and toothpicks as beams. The squishiness adds extra challenge, and the results are colorful and fun. This activity supports fine motor development, spatial awareness, and problem-solving.<\/p>\n\n\n\n
Bouncing Egg Chemistry<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> raw egg, vinegar, clear jar or cup<\/p>\n\n\n\nPlace a raw egg in a cup of vinegar for 24\u201348 hours. The vinegar dissolves the shell, leaving behind a soft, rubbery membrane. Kids can gently bounce the egg and observe how the chemical reaction (acetic acid + calcium carbonate) works. It\u2019s messy, amazing, and unforgettable!<\/p>\n\n\n\n
Easter Basket Pulley System<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> small basket, string, spool or hanger, toys or candy for weight<\/p>\n\n\n\nUse a string and a simple pulley (like a curtain rod, hanger, or banister) to lift an Easter basket from the floor. Kids fill the basket with different weights and observe how pulley mechanics make lifting easier. Great intro to force, motion, and mechanical advantage\u2014plus, it feels like holiday magic.<\/p>\n\n\n\n\nEarth Day STEM Activities for Kids<\/h3>\n\n\n\n Earth Day is the perfect time to help kids understand how they can care for the planet. These STEM activities for kids explore recycling, water filtration, and environmental awareness in fun, hands-on ways that leave a lasting impression.<\/p>\n\n\n\n
Water Filtration Experiment<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> plastic bottles (cut in half), coffee filters, cotton balls, sand, gravel, dirty water<\/p>\n\n\n\nKids build a working water filter using layers of cotton, sand, and gravel. They pour dirty water through and observe the filtration process. This simple but powerful experiment teaches about water conservation, pollution, and the science of purification.<\/p>\n\n\n\n
Recycled Paper Making<\/h4>\n\n\n\n Age:<\/strong> 5\u20138Materialien:<\/strong> old newspapers, blender, water, screen or mesh, towel<\/p>\n\n\n\nShred paper and soak it in water, then blend it into pulp. Pour the pulp onto a screen and press it flat with a towel. Let it dry, and you have recycled paper! Kids learn how paper can be reused instead of thrown away\u2014while exploring textures, absorption, and sustainability.<\/p>\n\n\n\n
Trash Sorting STEM Game<\/h4>\n\n\n\n Age:<\/strong> 3\u20137Materialien:<\/strong> printable icons or real cleaned waste, four labeled bins: Trash, Recycle, Compost, Reuse<\/p>\n\n\n\nLet kids sort common items (or pictures) into the correct bins. Ask them to explain their choices. This interactive activity builds classification skills and sparks conversations about waste management in a very approachable way.<\/p>\n\n\n\n
Greenhouse in a Cup<\/h4>\n\n\n\n Age:<\/strong> 4\u20137Materialien:<\/strong> clear plastic cups with lids or plastic wrap, soil, seeds, water<\/p>\n\n\n\nKids plant seeds in cups and cover them to create mini greenhouses. Place them in a sunny spot and track growth. This activity connects Earth Day with plant science, life cycles, and how a greenhouse protects and accelerates natural processes.<\/p>\n\n\n\n\nOutdoor STEM Activities for Kids<\/h3>\n\n\n\n Getting outside is one of the best ways for children to learn about science and the world around them. These STEM activities for kids encourage exploration, observation, and creativity\u2014all while enjoying fresh air and natural spaces. Whether you’re in the backyard, park, or schoolyard, these hands-on projects turn the outdoors into a living classroom.<\/p>\n\n\n\n
Nature Shadow Tracing<\/h4>\n\n\n\n Age:<\/strong> 3\u20136Materialien:<\/strong> toys, chalk or paper, pencil, sunny outdoor space<\/p>\n\n\n\nPlace toys or objects on a hard surface under the sun and trace their shadows with chalk or pencil. Come back at different times of the day to trace again and see how shadows move. This simple activity helps children understand how the Earth\u2019s rotation affects light and shadow\u2014using only sunshine and curiosity.<\/p>\n\n\n\n
Wind-Powered Pinwheel Test<\/h4>\n\n\n\n Age:<\/strong> 5\u20139Materialien:<\/strong> pinwheel (store-bought or DIY), notebook, stopwatch, different wind sources (fan, blowing, natural wind)<\/p>\n\n\n\nTake your pinwheel outside and test how different wind sources affect its spinning. Try holding it higher, lower, or at different angles. Let kids record their observations. This introduces wind energy and basic aerodynamics in a fun, highly visual way.<\/p>\n\n\n\n
Bug Counting & Habitat Mapping<\/h4>\n\n\n\n Age:<\/strong> 4\u20138Materialien:<\/strong> clipboard, paper, markers, magnifying glass<\/p>\n\n\n\nIn a garden or yard, ask kids to find and count bugs\u2014ants, beetles, butterflies. Have them draw where each bug was found (on a rock, under a log, in a flower). This combines ecology, data collection, and spatial awareness while developing empathy for small creatures.<\/p>\n\n\n\n
DIY Windmill Build<\/h4>\n\n\n\n Age:<\/strong> 6\u20139Materialien:<\/strong> paper, straws, pins, cardboard, scissors, tape<\/p>\n\n\n\nLet kids build their own windmill or wind turbine using household materials. Take it outside and test how it spins in real wind or under different conditions. A wonderful mix of engineering and renewable energy concepts\u2014plus, it’s creative and customizable.<\/p>\n\n\n\n
Nature Boat Float Challenge<\/h4>\n\n\n\n Age:<\/strong> 5\u20139
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