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

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Be an inspector detective for a day in this fun mystery game that puts your child's powers of observation to the test. Perfect for a party or group gathering.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Put your kid's Internet research skills to the test with this activity that will help him learn more about the history and cultural significance of fireworks.

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

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Test your learner's knowledge of Barack Obama by challenging your child to complete a crossword puzzle about the President after reading a short biography.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Are you sneaky, sneaky? You'll have to be when your play this fun game involving squirt guns and blindfolds that'll test your child's stealth.

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

Kids put their geography knowledge to the test in this balloon volley game inspired by the Dr. Seuss book "Oh the Places You'll Go".

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Improve your child's memory, focus, and concentration with this outdoor group memory game. For 4th grade, 5th grade, and middle school age children.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Many of the world's most important historical documents were written with quill pens. Have your kid make his own quill pen and put his penmanship to the test!

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

Work on division with remainders in this fun fourth grade math board game.

Work on finding means and medians in this fifth grade math card game.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Practice multiplication facts by playing baseball in this fun, third grade math board game.

Introduce decimals and place value with this fun math card game for fourth grade students.

Here's an activity that takes fourth grade reading and writing skills beyond the classroom to offer a warm welcome to a new neighbor.