This Earth Day, learn about conservation and the environment while you enjoy solving a fun puzzle! 

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

Introduce your child to the building blocks of life: DNA! This coloring page features a double helix structure, or a DNA strand.

Children learn about the food cycle in a rain forest as they color in a scene of snakes, butterflies, leopards, and other forest-dwelling creatures.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

How did salt ever get into the ocean? Find out how, and then try conducting your own salt water experiment.

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

Help your kindergarten students learn about sequencing and science as they learn about the five stages in a ladybugs life.

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Practice geology vocabulary with this challenging crossword puzzle.

Energy is a crucial part of physical science! All things on Earth have energy, whether it's potential or kinetic.

Hypothesis, observation, data...with so many terms, learning the scientific method can be tricky. Learn the steps by helping Dr. McSquare sort out his reports.

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

What a wonderful world word search! See if you can find all 10 of the Earth-related terms in the word search.

Does your little scientist know the water cycle? Challenge her with this cut and paste activity where she'll label each part of this water cycle!