3rd - 7th Grade Science Activities : Page 12

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

This science fair project idea produces sounds by creating vibrations using different objects.

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

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

Construct batteries that make electricity from fruits with this fun science fair project.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

This science fair project idea demonstrates that plants give off water.

This project determines what category of person is most likely to be ticklish.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.