Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

Your young cosmonaut will work on reading comprehension, story sequencing, and creative writing while he's diving into the far reaches of our universe.

Here are listed a handful of natural resources, for kids to classify as renewable resources and nonrenewable resources.

Help your child get to know an elementary element with this worksheet about iron.

Kids draw something they smell in the garden for this kindergarten science worksheet. They learn that smell is a sense and that we use our noses to smell.

Can you figure out how to match each leaf to its correct tree? Just cut out the leaves, glue them to the trees and then pick your favorite!

The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

Learn about the animal kingdom with this centipede anatomy worksheet. Fun fact: Centipedes have either 15 or 17 pairs of legs, but never 16!

Which tail goes with which animal? Help your preschooler learn to sort and categorize with this fun activity.

This spikey Stegosaurus looks fierce, but don't worry -- he's a vegetarian! Learn all about this massive dinosaur with a fun fact sheet.

This mix-and-match lists examples of natural resources. Kids can connect the natural resource with the resulting product.

Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

Did you know there is a tortoise who is over 100 years old? Learn some interesting animal facts with this cut and paste matching activity!

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

The Mockingbird is Tennesse's state bird: it can mimic the sounds of other birds, and even the sounds of insects.

Read about one of Yellowstone National Park's coolest animals, the big horn sheep.

Do shoes go on your head? Of course not! On this prekindergarten science worksheet, kids draw a line to connect each piece of clothing to the correct body part.

Clock, octopus, starfish, turtle: Which thing does not belong in this group? Kids completing this preschool worksheet identify the object that does not belong.

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

Through a simple matching activity, kids learn how their actions can have a direct effect on the environment.

Discover the symbiotic relationship that helps this angler fish find his next meal!

Get your child thinking about the five senses with this worksheet that gets her to consider taste, touch, sight, smell, and hearing.

Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.