STEM Activities for Kids at Home

STEM stands for science, technology, engineering and math. STEM activities help children ask questions, test ideas, solve problems and learn from mistakes, and you don't need a lab. These experiments and challenges use everyday materials and work for ages 4 to 11.

Why STEM at home?

• Curiosity: children learn to ask "Why?" and "What if?"
• Problem-solving: testing, failing and trying again.
• Confidence: hands-on success builds a "can do" attitude.
• Real-world skills: measuring, predicting and recording results.

The science process (simple version)

1. Ask a question. "Will this float?"
2. Predict. "I think it will sink."
3. Test. Try it.
4. Observe. What happened?
5. Explain. Why do you think it happened?

Science experiments

1. Sink or float. Test household objects in water. Then add salt and test again.
2. Baking-soda volcano. Mix baking soda, dish soap and food coloring in a cup, then pour in vinegar. See kitchen science experiments.
3. Rainbow walking water. Line up cups of colored water with empty cups between them and connect them with paper towels. Watch the colors travel and mix.
4. Dancing raisins. Drop raisins into a glass of fizzy water and watch them rise and fall.
5. Growing beans. Plant a bean in a clear jar and watch roots and shoots grow. See gardening activities.
6. Magnet hunt. Test which objects a magnet attracts.

Engineering challenges

1. Paper bridge. Build a bridge between two books with one sheet of paper. How many coins can it hold? Try folding it in different ways.
2. Tallest tower. Use spaghetti and marshmallows, paper cups, or blocks. Who can build the tallest tower that stands for ten seconds?
3. Egg drop. Design a container that protects a raw egg when dropped. (Do this outside!)
4. Paper airplanes. Design and test planes. Which flies furthest?
5. Marble run. Build a run from tubes and boxes. See toilet roll crafts.
6. Boat challenge. Build a foil boat. How many coins can it carry before sinking?
7. Popsicle stick catapult. See popsicle stick crafts.

Technology (no screens needed)

1. Coding with arrows. Draw a grid on paper and write arrow instructions to move a toy from start to finish. It's a great introduction to coding, and similar thinking to a maze.
2. Algorithm sandwich. Children write step-by-step instructions to make a sandwich; a grown-up follows them exactly (and hilariously).
3. Take it apart. Unscrew an old broken toy or gadget (with batteries removed and supervision) to see what's inside.

Math in STEM

• Measuring: measure heights, lengths and distances. Try our measurement worksheets.
• Graphing: record results and make bar graphs. See graphing worksheets.
• Patterns: find patterns in nature, like petals, shells and pinecones.
• Shapes: which shapes make the strongest structures? (Triangles!)

Recording results

Encourage children to keep a "science notebook":

• Draw the setup.
• Write predictions.
• Record what happened with pictures, numbers or tally marks.
• Write what they learned.

Ideas by age

Ages 4–5: sink or float, magnets, dancing raisins and block towers.

Ages 6–7: volcanoes, walking water, paper bridges and paper airplanes.

Ages 8–9: egg drops, catapults, foil boats and arrow coding.

Ages 10–11: designing their own experiments, measuring and graphing results, and more complex builds.

Common mistakes to avoid

• Giving the answer straight away. Let them predict and discover.
• Worrying about failure. Failed experiments are full of learning.
• Skipping safety. Supervise experiments with vinegar, heat or sharp tools.

Frequently asked questions

What's the easiest STEM activity for young children?

Sink or float. It needs only water and household objects.

Do I need special equipment?

No. Most STEM activities use kitchen ingredients, paper, tape and recycled materials.

How do I make STEM fun for kids who don't like science?

Use challenges and competitions, link activities to their interests (dinosaurs, space, cars), and let them get hands-on.

A four-week STEM plan

Week 1: science. Sink or float, magnets, walking water and dancing raisins.

Week 2: engineering. Paper bridges, spaghetti towers, foil boats and marble runs.

Week 3: technology. Arrow coding on paper, the sandwich algorithm and taking apart an old toy.

Week 4: math. Measuring, graphing results from earlier weeks, and an egg drop challenge to finish.

How do I encourage girls (and boys) who think they're "not science people"?

Link activities to their interests, share stories of scientists and engineers from all backgrounds, and praise curiosity and persistence.

What should I do when an experiment doesn't work?

Celebrate it! Ask "Why do you think that happened? What could we change?" Real scientists learn from failed experiments all the time.

How do I store STEM supplies?

Keep a "maker box" with tape, string, straws, paper cups, lolly sticks, rubber bands, foil, balloons, a ruler and recycled materials.

How can I link STEM to my child's interests?

Love cars? Build ramps and test speeds. Love animals? Design a bird feeder. Love art? Try color mixing and symmetry. Starting from interests keeps children engaged.