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

Your child will write about his or her favorite animal. Kids will research their favorite animals online or at the library, then write down three facts.

Plants need to breathe and eat food (energy) just like us! Help your budding naturalist to learn about photosynthesis.

Bird-watchers will love this worksheet, featuring just a sample of the many song birds flying around Yellowstone National Park.

Help your 2nd grader write out fractions in this underwater adventure.

This mole has a pouch for its young, just like kangaroos. Get your child into life science learning with this fun coloring page.

Plants are living things just like you and me! But how do plants travel? Learn all about seed dispersal with this fun sheet.

Introduce your child to a fascinating new animal, the Baird's tapir. This is just one of many endangered species around the world.

Do you need a job? Well, this elephant is looking for a new symbiotic partner, and you could be just the candidate he's looking for!

Coyotes' famous howl gave them the nickname "song dogs." This is just one of several coyote facts your child can learn from this worksheet.

Help your child learn about sensory language as they write a 5-senses poem.

What does a plant need to grow? Just like us, plants need food, water and air! Help your child understand more about plant life.

The emu: It's the second-largest bird in the world. How big is it? Let's just say that its eggs can be almost 9 inches long!

Just like people, animals have babies that grow up into adults. On this worksheet, Kids draw a line to match each baby with its adult version.

Did you know that trees have more parts than just the trunk, branches and leaves? Take a look on the inside of a tree with this fill-in-the-blank diagram!

With this fun sheet, your child will get to learn a few fun facts about the raven, and then complete a crossword based on what she's just learned.

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.

What's your favorite animal? Kids love answering that question, and with this animal research graphic organizer, they can write all about it.

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!

This cute worksheet asks your first grader to write down each part of the human body--encouraging research on life science and boosting his spelling ability!

Crocodiles, snakes, and toads fill the page on this cute crossword printable. Can your child figure out each animal's name and write them in the puzzle?