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To help your child learn how to use a thermometer, try this temperature collecting activity at home.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

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

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

This science fair project idea compares biodiversity between drops of water.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.