First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.