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

This fun worksheet is jam-packed with fun facts, a word search and trivia questions, all about the baboon!

Learn about the foundational process of American democracy in this essential worksheet!

Study the night sky with this hands-on science worksheet for third and fourth graders!

This worksheet features Uranus facts. Did you know this planet is blue and spins on its side?

Have you considered why elephants have trunks, or why polar bears have thick fur? Reflect on animal adaptations with this fourth-grade worksheet!

Explore the sights and sounds of the prairie with this fourth- and fifth-grade reading-comprehension activity!

For piano lovers everywhere, here's a fun reading exercise featuring George Gershwin, the composer who wrote the brilliant Rhapsody in Blue.

Looking for some patriotic math practice? Salute the red, white and blue while reviewing times tables, even during summer break!

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Learn facts about Venus, the planet that shines the brightest in our night sky! Then practice your knowledge of the solar system with bonus trivia at the end.

Learn facts about Mars, the great red planet in the night sky. There is more find out about space by answering the question at the bottom of the worksheet.

Looking for some patriotic math practice? Salute the red, white and blue while reviewing times tables with division equations using multiples of 5.

Learn a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

Roses are red, violets are blue, I know the parts of a flower, how about you? Learn about flower anatomy with this worksheet.

Talk about a sweet ride! Encourage your young vehicle-enthusiast to color it in with a trendsetting color like cobalt blue, cherry red, or jet black.

Learn what Constitution Day is and why it’s important in this engaging passage!

In this worksheet, children read the story of Parks' act of passive resistance, then follow a series of thoughtful prompts to reflect on why the boycott was successful, as well as why it inspired the support of so many people around the United States.

Learn how to read climate maps and why they're useful in this worksheet that shows the climate of Africa.

Ever wonder why zebras have so many stripes? Find out with this fun worksheet all about the zebra!

Beware of walking under ladders! Find out the origins of this superstition and why people avoid walking under ladders.

After your students read an excerpt of The Land of the Blue Flower, ask them to respond to a writing prompt. Encourage them to use comparative works like similarly and unlike.

What happened and why? Match the events in cause-and-effect pairs in this engaging reading comprehension worksheet!