In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Use muffin tins to create a simple, affordable and fun game to help your child practice their vocabulary!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

Test whether plants can grow without sunlight and water.

Find out which kind of bubble wrap fares best when put in impact.

Try a fun Mother's Day game for moms and kids to play together!

What combination of cloth and stain will be the easiest for removing stains? Test and 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, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

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

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

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

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.

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.

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

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.

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".

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.

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

Learn all about balance and motion as your child designs a corn maze!

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.