3rd - 7th Grade Science Activities : Page 18

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This science fair project idea explores how length affects the weight a bridge can hold.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

This project examines what types of objects burn and which burn faster and cleaner.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Is your child a young ornithologist in the making?

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project idea investigates the difference in reaction times between boys and girls.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Give your budding young observers a chance to discover simple machines at use in their own home.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.