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.

Here's a simple activity to reinforce your fourth grader's study of her home state and help her make a pretty keepsake.

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.

Challenge your fourth grader to try to recreate the geography of her state using just flour, salt, and water.

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

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Test whether plants can grow without sunlight and water.

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

What combination of cloth and stain will be the easiest for removing stains? Test and experiment!

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

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

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

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

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.

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

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!

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".

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.

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.

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

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.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.