Learners will use a word bank to label 15 parts of the human digestive system in this life sciences diagramming activity.

This diagram of a human skeleton is labeled with 12 major bones, from skull to fibula.

Learn about the integumentary system, which is really just a fancy phrase for "skin", in this worksheet.

These worksheets help kids understand food webs, an important part of the life science curriculum in fourth grade.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

Use this heart anatomy sheet to learn all about your heart and how it works.

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Learn more about the mysterious brain and how it works with this brain anatomy worksheet.

Does your budding biologist know his plant parts? Get a great review of some important plant vocabulary with this info page.

This Awesome Anatomy coloring page is all about the human eye, and makes a handy study tool as well!

Budding botanists can master the different parts of a seed with this helpful diagram!

Learn the ins and outs of one of the body's most important organs: the heart!

Dive deep into your body's circulatory system with this worksheet on blood and what it's made of.

Get to know your genes with Steve the savvy scientist! Genes help determine everything from your hair color to your height.

Cranium, noodle, melon, noggin...the human skull has been called a lot of things over the years. Here are the proper names for each part.

Budding biologists can learn all about human digestion with this information page, complete with a diagram of the digestive system.

Need to know all about the lungs? Study up with this comprehensive lung anatomy worksheet.

Read up on the digestive system with this page, which follows your food from start to finish.

There are some parts of our brains that are still too complicated for scientists to understand! Find out the basics of the brain's functions with this fun page.

Ever wonder how the human body functions? Enjoy this great info sheet all about the human heart, one of our most important organs.

Children will learn important facts about food chains in these worksheets.

Review the different body parts with a fun crossword! This is a great way for your little doctor-in-training to review the basic organs and their functions.

Sit down for a fun science lesson with Steve the savvy scientist as he teaches you all about dominant and recessive genes!

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Learn more about the skin (and the science behind pimples -- ew!) in this printable life science diagram.

This Awesome Anatomy coloring page focuses on the heart and all the different parts of it.

This skeletal system worksheet, featuring a funny diagram of a human skeleton, is just the thing kids need to master their skeletal system vocabulary.

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.