Have you ever wondered why manhole covers are round? It's a good thing to know -- big companies sometimes ask that question in interviews.

Get your learning lasso ready for this plants and animals round-up! Can your child tell the difference between a living and non-living thing?

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!

Gear up to go into the science lab with the help of this activity!

Help your kindergartener cut out the shapes at the bottom, then match them up to the right season. Then go crazy coloring!

Go cloud-gazing on a nice day, and use this fun cut-out chart to name the types of clouds you see!

Go green and grow your own vegetable garden! With this helpful cheat sheet, you can learn a bit about planting radish.

All living things go through cycles. Learn about the life cycle of an amphibian with this diagram of the life of a frog!

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

Next time you're outside, go on a treasure hunt with this activity from PBS KIDS' Dinsosaur Train. Then, write all about your nature treasure loot!

Have any good ideas for recreational resources? The term "recreational resources" has to do with the activities we do for enjoyment and the places that we go.

Practice your detective skills with this fun worksheet! Have your child go around the house and see how many things from the list they can find.

Looking for a way to teach your kids all about the planets? This worksheet is the way to go. It features Venus, the second planet from the sun.

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.

Learn about spider tortoises, one of the world's tiniest tortoise species, with this handy worksheet. Can't go to the zoo? We bring the zoo to you!

Do you wish to boldly go where no astronaut has ever gone? Blast off with this coloring page that features four new planets for you and your crayons to explore.

Take a trip down to the deep blue sea and learn about the life cycle of a fish! Fish go through the same stages of life as many other living things.

Can't go to the zoo? We bring the zoo to you! Check out the fulvous whistling duck, a bird with social skills and the willingness to share each other's nests.

Teach your kindergartener a few words that go with different smells to help him expand his vocabulary and continue learning about the five senses.

How does the butterfly become so beautiful? Learn about the four stages that it goes through in its life.

The best way for your young explorer to learn and understand how nature works is by going outside!

What is the Earth made of? Find out everything that goes on just below the surface in this science reading worksheet.

This fun cut and paste sheet teaches kids about the process an apple tree goes through as it grows.

All living things have a life cycle. Learn about the different stages that a bird goes through from birth to adulthood!

Sandy the bee is going to a party tonight. Encourage your 2nd grader to help him get there on time by drawing hands on the clock for him.

As kids cut and pastes the pictures in the right places on this life science sheet, they learn a little about the process lettuce goes through as it grows.

Your child has probably tried a potato, but does he know the process it goes through to make it to the table? Find out with this life science worksheet.

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.

If you know what each planet looks like, you'll have no trouble with this intergalactic crossword puzzle.

Test your memory skills as you review the different types of animal body coverings with this animal memory match game!