Our understanding of the atom has changed over the past few hundred years! Read about a few different theories on the structure of an atom.

Learn the basic structure of an atom with this introductory page, complete with a fun experiment they can try at home!

Students learn about the relationship between the structure and function of cell walls and cell membranes in this engaging life science worksheet!

Students take a deep dive into the structure of animal cells in this middle grades life science worksheet!

Encourage students to take a deeper dive into the structure of plant cells in this middle grades life science worksheet!

Let your kid's knowledge of leaf vocabulary climb as high as a tall, tall tree with this fun word search.

All attention on atoms in this amazing activity!

This summer word game will help you beat the summer heat. Start by learning a hot summer word, then play a water spelling game outside.

This word search is all about owls! Your child will learn a few different species of owl as he looks for them in the word search.

There are a lot of structures that make up a new plant, called a seedling. Your child will learn what they're called with this life science word search.

What has two legs and carries its baby in a pouch? Fill in this crossword puzzle and learn some fun facts about two-legged creatures!

Brush up on some physics vocabulary with this energy word search!

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

Investigate the mystery of why two tomato plants developed so differently!

Discover the many different kinds of conifer and deciduous trees as you complete this word search!

Use this simple graphic organizer to map out a new word and explore it in depth.

What's the weather like today? Here's a word search perfect for any budding meteorologist.

Budding paleontologists will refer to a word bank to identify 10 dinosaur-related vocabulary words in this playful word search puzzle.

Help your child learn weather words with this climate-themed word search.

The Earth is very much alive, even its rocks shift and change. Practice geology vocabulary with this challenging word search.

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

Budding inventors can get a fun review of the simple machines with this word search.

Invite spellers on an inter-stellar adventure with this fun word scramble puzzle.

Use this word map template to help students develop their vocabulary.

A lot of common objects use electromagnets to work. This word search will get your child thinking about all the electrical and mechanical devices around her!

Do you know what can be found in the desert? Teach your child to read and spell a few new vocabulary words with this desert word search!

Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds it.

Students demonstrate their knowledge of the structure of plant cells in this middle grades life science worksheet!

Students demonstrate their knowledge of the structure of animal cells in this middle grades life science worksheet!

Check out the structure of a bone in this "Inside-Out Anatomy" worksheet.