Why do some objects make loud sounds when dropped, while others make quiet sounds?

Is your little one into creepy crawlies? Test his bug knowledge with a fun crossword puzzle.

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

Looking for quiz questions to test your first grader's general knowledge? This printable will challenge your kid's overall knowledge.

All living things are made up of many different parts to help them function! Can you name and draw all the parts of a plant?

Learn all about the Mountain Bluebird, Idaho's state bird.

Learn all about Delaware's state bird, the Blue Hen Chicken.

This coloring page is all about Georgia state bird, the Brown Thrasher.

Children will connect their understanding of gases to real-world items as they circle all of the pictures showing gases.

Learn all about official Maine state bird, the chickadee, with this coloring page.

Find out what wind is all about in this intro to earth science worksheet.

Learn all about Vermont's state bird, the Hermit Thrush with this state bird coloring page.

Learn all about precipitation and the role it plays on the planet in this weather science worksheet.

Colorado's state bird is the Lark Bunting, and you can learn all about it with this coloring page.

Teach your curious first grader the names of all his different teeth with this informative worksheet!

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

Let's play animal hide and seek! Your little zookeeper will learn all about animal camouflage with this adorable worksheet.

Brighten your dino lover's day with this fun fact dot to dot all about Struthiomimus, the "ostrich mimic".

Where do animals live? All living things need homes. Help these animals get back home by following the maze.

All living things need a few basic things to survive. Can your little scientist name the things that a plant needs?

What a wonderful world word search! See if you can find all 10 of the Earth-related terms in the word search.

Does your child love butterflies? She'll learn all about them as she's asked to draw each stage of the butterfly's life.

Australian birds feature some unique, striking groupings of bright color, and the sulphur-crested cockatoo may put them all to shame.

All animal houses are different, depending on each animal's needs and abilities. Can your little scientist draw the homes for these animals?

Learn all about the California state bird, the Quail (and color it in, too) with this fun page from our State Birds series.

This page is all about Nevada's Mountain Bluebird. Make sure you have enough blue crayons to get you through this sheet!

This beginners worksheet will help your child get all their ducks in a row when it comes to understanding animals that hatch from eggs.

In this worksheet, children identify and illustrate four things all plants need to grow. They then answer three simple research questions about plants.

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

First graders can learn all about the sun by reading the facts then using what they've learned to label each layer of the sun.