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

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

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

In this science fair project, students make their own rain gauge to measure rainfall.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.