STEM at Home: The Best Science & Engineering Activities for Homeschoolers

One of the greatest advantages of homeschooling is the freedom to make science real. Instead of reading about chemical reactions in a textbook, your child can watch vinegar and baking soda fizz and overflow. Instead of memorizing the parts of a plant, they can grow one on the windowsill and observe every stage.

STEM (Science, Technology, Engineering, and Math) education is especially well-suited to the homeschool environment, where you're not limited by a 45-minute class period, liability-worried administrators, or a shared classroom. You can go as deep as your child's curiosity takes you — and stop when it doesn't.

Here are some of the best STEM activities and resources for homeschoolers.

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Kitchen Science: Chemistry You Can Do Right Now

The kitchen is one of the best science labs you'll ever have. Almost everything in your pantry can become a chemistry experiment.

Baking Soda and Vinegar Volcano (Ages 5–10)

The classic. Combine baking soda and vinegar to demonstrate acid-base reactions and produce carbon dioxide gas. Extend it by testing other household acids (lemon juice, orange juice) and bases (baking soda, washing soda) to see which produce the most reaction.

Elephant Toothpaste (Ages 8–14)

A dramatic demonstration of catalytic decomposition. Hydrogen peroxide breaks down rapidly when a catalyst is added, producing a foam "explosion." Requires 30% hydrogen peroxide (available at beauty supply stores) and yeast. Incredibly memorable.

Density Tower (Ages 6–12)

Carefully layer liquids of different densities (honey, corn syrup, dish soap, water, vegetable oil, rubbing alcohol) in a tall glass to create a rainbow tower. A beautiful demonstration of density and polarity.

Chromatography (Ages 8–14)

Draw a line with a washable marker on a coffee filter, dip the edge in water, and watch the ink separate into its component colors as the water travels up the filter. A great introduction to chemistry and separation science.

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Biology: Living Science at Home

Grow a Bean in a Bag (Ages 4–10)

Place a bean seed in a ziplock bag with a damp paper towel and tape it to a window. Watch germination happen in real time — roots, shoot, and all. Extend by comparing different types of seeds or testing how light and temperature affect germination.

Backyard Nature Journal (All Ages)

Give your child a blank notebook and send them outside to observe, draw, and write about what they find. Introduce field guides and teach them to identify local birds, insects, and plants. This is the core of Charlotte Mason science and produces remarkable naturalists.

Dissection

If you're comfortable with it, dissection is one of the most memorable biology lessons there is. Start with flowers (stamens, pistils, petals, sepals), then work up to owl pellet dissection (no gore — owls regurgitate pellets of undigested bones and fur). Carolina Biological Supply offers great dissection kits for home use.

Microscope Work (Ages 8+)

An inexpensive microscope opens up an entire invisible world. Look at pond water, cheek cells, onion cells, pollen, salt crystals, and more. The AmScope brand offers excellent entry-level microscopes affordable for home use.

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Physics: Forces and Motion

Simple Machines Exploration (Ages 6–12)

Build ramps (inclined planes), levers, pulleys, and wheels to explore how machines reduce work. LEGO sets and everyday materials work perfectly. The key is letting kids experiment and draw their own conclusions.

Bridge Engineering Challenge (Ages 8–14)

Challenge your child to build the strongest possible bridge using only index cards and tape to span a gap between two stacks of books. How much weight can it hold? This teaches structural engineering, testing, and iterative design.

Egg Drop Challenge (Ages 10+)

Build a device to protect a raw egg from a second-story drop. Kids learn about impact absorption, structural integrity, and engineering design in one unforgettable activity.

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Technology and Coding

Scratch (scratch.mit.edu)

MIT's free coding platform lets children create games, stories, and animations using visual block-based programming. Free, browser-based, and genuinely engaging for ages 7–14.

Code.org

Free coding courses for all ages, including Hour of Code activities. Great for beginners and designed specifically for K–12.

Raspberry Pi Projects

For older, more advanced students (ages 12+), Raspberry Pi is a tiny, affordable computer that can be programmed to do all kinds of things — from weather stations to games to home automation projects. Excellent for teens interested in computer science or engineering.

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Best STEM Curriculum Resources

Mystery Science

Engaging video-based science lessons with minimal-prep hands-on activities. K–5 focused and beloved by homeschool families.

Real Science Odyssey (Pandia Press)

A thorough, secular science curriculum with lab activities designed for home use. Covers biology, chemistry, physics, and earth science at multiple levels.

Ellen McHenry's Basement Workshop (ellenjmchenry.com)

Beautifully designed, creative science units for middle school level. Topics include chemistry, the brain, botany, and more. Affordable and engaging.

CK-12 (ck12.org)

Free science textbooks and simulations for middle and high school. Comprehensive and customizable.

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Related articles:

• The Best Free Homeschool Curriculum Resources Online
• How to Start Homeschooling: A Complete Beginner's Guide
• How to Keep Homeschool Records and Build a Portfolio