Plant a Garden
One of the easiest science experiments for kids is to plant a garden with them. Taking care of her garden and watching it grow is a science project that will last longer than most.
Easy-to-grow herbs and unusual vegetables can be used to teach kids the science behind gardening, good nutrition skills and patience while they wait for their garden to grow. Plan your garden carefully and you and your children can plant a garden that feeds your family.
Create a Home Weather Station
Gauge the weather and make predictions. A home weather station can be as simple or elaborate as you and your children want to build it.
Your most basic weather station can have a rain gauge, wind sock and a compass so your kids can record the weather in their weather journal. Or go big with a weather station that has it all, from a hygrometer to an anemometer.
Build an Ant Farm
Watch those busy ants dig tunnels and interact. You can buy an ant farm or it's easy enough to build your own ant farm out of a few household items.
Feed the ants. Observe them. Release them back into the wild after a few days and start all over again.
Learn About Ice
Watching ice melt alone is boring. Watching ice melt with your kids is a science experiment.
There's more to just standing around to watch ice melt, though. A melting ice experiment gives you the opportunity to teach kids about molecules and why ice floats. After kids learn the basics, they can rescue an ice cube and melt ice with salt.
Make Your Own Caterpillar House
Find a fuzzy caterpillar and you've just found your kids' next science experiment. Make your own caterpillar house out of household items.
Feed the caterpillar, watch it and, before your children know it, they'll be releasing a butterfly into the wild that they helped house.
The best part about this experiment is that you can try it any time of the year. The caterpillars can be contained throughout the winter and be released in spring.
Build a Submarine
A soda bottle and some household items are all you need to build a submarine. Once it's built, kids can push the submarine under water in the bathtub and watch it spring to the top.
Let it go and it floats. Now put a small rock in the tub and watch what happens. Learning about the density teaches kids why the larger bottle floats but the smaller rock sinks.
Create a Rocket Balloon
Grab a balloon, string, straw and tape to create a rocket balloon. The string acts like a track and the straw as the carrier when the air from the balloon propels it from one end to the other.
This experiment introduces kids to Newton's Third Law of Motion, "To every action there is always an equal and opposite reaction."
Turn your kids into budding entomologists. Hunt bugs together.
After the solar system model is complete, use your kids' newfound interest in space to teach them about the planets and stars. You can even throw in some history lessons about the men, women and animals who've launched into the Great Beyond.
Erupt a Volcano
Make your own volcano from a soda bottle wrapped in clay or dough. Teach kids about chemical reactions with this non-toxic volcano that uses warm water, baking soda and liquid dishwashing detergent to create flowing lava.
Your volcano is reusable too. Just re-fill the soda bottle and watch that volcano erupt over and over again.
Grow Sugar Crystals
How about a science experiment that's sweet? Grow sugar crystals to make your own rock candy.
The only ingredients you need are sugar and water. Kids won't have to wait long to see the results of this experiment. Your crystals will begin forming in a day or two.
Learn about chemical bonds when you and your kids make gooey slime together. Combine non-toxic glue and borax and the slime instantly forms.
Add food coloring if you want to tint your slime and store it in a bag so your kids can re-use it. Once you get the basics of slime down, you can try your hand at more advanced slime recipes. Find the right recipe and your slime can glow in the dark, be used in the bathtub and can even be eaten!