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

In 2012, an 80 million-year-old dinosaur was discovered, and you can learn all about this 20-foot, 2-ton horned herbivore.

Did you know new species of animals are discovered every year? Color in this little cricket, the only one of his kind who can pollinate plants!

Write down the name of each season that is shown in the pictures then color them and turn this worksheet into a unique placemat that can be used year-round!

Budding scientists record their observations with this open-ended magnifying glass template!

Let your little weather observer discover the four seasons! She'll match up each season with its proper picture to show her knowledge of how weather changes.

Find out fun facts about Monarch butterflies and create your own colorful butterfly in this worksheet. Then turn it into a pretty placemat!

Grain, dairy, meat, or vegetable? Teach your kids about the food groups with a Thanksgiving-themed cut-and-paste sorting activity.

Seasonal weather postcards get kids to learn some vocabulary and identify the seasons. Learn about spring, summer, fall, and winter with weather postcards.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Find out all about snow in this worksheet -- what it is, where it comes from and what it looks like.

This worksheet uses a paper bird to demonstrate center of gravity, and practices following directions and fine motor skills.

Got a curious kid at home? Help him discover more about the kangaroo, the national animal of Australia and a favorite of zoo-goers everywhere.

If your child prefers scaly and slithery to soft and fluffy, here's a worksheet on the goanna, a large lizard that lives in Australia.

Get your kindergartener started on geography with a fun drawing activity! She'll learn a little about the anatomy of mountains as she draws.

What does a dog eat? Kids choose the pictures that show what kind of food each animal likes to eat in this first grade life science worksheet.

Get your kindergartener started on Earth science with a lesson on the seasons. Kids write the name of each season under the correct picture.

All living things need water to survive. Listed are some of the ways we use water: can your child think of others?

This research, drawing, and writing worksheet is a fun introduction to informational and science writing.