Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Learn all about precipitation and the role it plays on the planet in this weather science worksheet.

Children hone their observation skills by matching the tracks to their corresponding water animal in this worksheet.

Celebrate dolphins, one of the most intelligent animals in the world, with a fun dot to dot coloring page.

Did you know that insects like dragonflies have life cycles that are very similar to our own? Help your little scientist get to know the circle of life.

Use this fill-in-the-blank chart to see how much your kindergartener knows about the parts of a bee.

These pictures have a lot to say! The animals in this worksheet don't talkÃbut they can tell you a lot about what they're like by the way they look.

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a ladybugâs life.

The mockingbird is internationally known, but it's also the most treasured bird in the state of Florida. Color in Florida's state bird in this coloring page.

Spark your child's interest in dinosaurs with this prehistoric dot to dot featuring plant-eating Stegosaurus.

Jump-start your kid's excitement about kangaroos! Together, you can learn some cool kangaroo facts, like how kangaroos can jump up to 30 feet.

Before trees grow into trees, they start out as little seeds. Can your child match the fruit and seeds with the trees (or plants) they came from?

Blue whale facts include that calves weigh up to three tons at birth and adults can be as heavy as 200 tons. Get other cool blue whale facts on this worksheet.

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Little space explorers, meet Mercury, the closest planet to the sun! This planetary coloring page comes with some fun facts about Mercury.

Budding inventors can get a fun review of the simple machines with this word search.

Understand nature's visual cues for the shifting of the seasons with this tree seasons match-up activity!

Hug a tree! It can be a home to many different animals. Can you identify the different shelters used by animals in this picture?

This worksheet combines the five senses with the fun and interesting topic of weather predictions!

Tree climbers and tree huggers alike, learn the basics of reading tree rings to find out about the life of a tree.

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a dragonflyâs life.

Test your kindergartener's understanding of the parts of a dolphin with this adorable, fill-in-the-blank dolphin chart.

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.

Children work on pattern-spotting and observation skills as they determine which of these six type of creatures is a bird.

Little scientists can learn about a fundamental concept of physical science with this worksheet all about density!