Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

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.

Learn with makes water molecules work with this fun and easy science activity!

Find out whether matte or shiny nail polish lasts longer.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Here's a fun activity that will give your child a way to develop his sentences, making them more detailed and interesting.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.