How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This simple way to help your child understand story problems begins as a quick activity and turns into a study tool for years to come!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Using only straight-line sewing, your fourth can create a nifty felt pencil case perfect for his busy life.

Vincent van Gogh painted golden hued pictures of the harvest using bold lines and vibrant color. Your child can explore this style of art using oil pastels.

Have fun making recycled paper using scraps of used paper in your home with this hands-on project.

In this project students experiment with making music using only glasses of water.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea produces sounds by creating vibrations using different objects.

These sparkling earrings look fancy but they're super simple to make using inexpensive craft items.

In this project, waves of vibrations are experimented with using water in glasses.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Using wholesome, natural ingredients like oatmeal, honey and raisins your child can make homemade granola bars!

In this science fair project you will make a model of a cell membrane using very simple material.

Using an empty plastic bottle, your child can create a newfangled version of this African percussion instrument.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

In this design challenge, your child will make a bottle rocket using typical household items.

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

In this design challenge, your child will create a parachute for a small toy using typical household items.

Using aluminum is a great way to recycle and make some shiny ornaments borrowing from this traditional Mexican art form. Here's an easy kids' activity!

Using low-tech supplies and a little extra ingenuity you can help your fourth grader create this unique, heartfelt Valentine card.

Here's a great activity to get your child using imagination and artistic skills to create a handmade vocabulary book, complete with illustrations!

In this activity, your child will get a review of addition, subtraction, multiplication and division using classic domino pieces.

Get ready to make a dollar...using playing cards! The first player to accumulate the amount of points equal to a dollar wins.

Create a fun hands-on game to practice long division, using magnetic numbers on a fridge.

In this activity, learners will discover how to make a basic water filtration system using common materials found around the house or outside.