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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

Have your student draft a blueprint for a haunted house, and trick (or treat) them into learning about geometry in the process.

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Is your third grader bombing around on a bike these days? Here's a way to put all that fun time together with some math learning, too.

Practice math and social studies skills with this fun game based on the Battle of Lexington and Concord.

This activity with add some fun and education to long car trips. Perfect for family vacations!

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

Practice multiplication facts and geography at the same time in this fun third grade math card game.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

This project tests the hypothesis that dark colors absorb more heat than light colors.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Multiplication facts are a necessary skill, and this board game provides a fun way for your third grader to practice them!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.