4th Grade Science Activities : Page 9

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Help your child plant a "tea garden": a garden made of herbs for making teas.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science project teaches students to classify different shapes of leaves.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

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!

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

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.

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.

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