3rd and 4th Grade Science Activities : Page 9

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.

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.

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.

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.

Make a backbone model to explore human anatomy and life science.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

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!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project investigates why the number of visible stars changes from place to place.

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

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

This science fair project idea identifies trees using a dichotomous key.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.