Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.