We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Test whether plants can grow without sunlight and water.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This biodiversity project examines the biodiversity in your own backyard.

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

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

Determine if gender affects the ability to identify different smells.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.