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

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

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

Learners will discover a simple overview of the human muscle system in this introductory worksheet.

Bug out on some insect anatomy! Can you name each part of the insect? Try making an educated guess by using what you already know about animal body parts.

Learning about the functions of plant parts doesn’t have to be puzzling! Review the parts of a plant with this crossword for first and second graders.

"The hip bone is connected to the...?" Sing the song perfectly with the help of this worksheet on the skeletal system!

The next time you're on a hike, be sure to take this leaf chart to guide you in identifying different types of leaves!

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

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.

Show what you know about the cell cycle with this mitosis matching worksheet!

Use this engaging worksheet to introduce students to the geologic time scale and the pieces of evidence scientists use to determine Earth’s history!

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

Students are introduced to the different types of symbiotic relationships that exist in ecosystems in this life science worksheet.

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

Young botanists test their plant know-how with this quiz.

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a butterflyÃs life.

Decide what differentiates living vs non-living things! First cut out the items on page 1, and then sort them in the chart on page 2.

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

Has your child learned about the life cycle of a frog in school? Test his understanding with this cute cut and paste worksheet.

This fun cut and paste sheet teaches kids about the process an apple tree goes through as it grows.

For those of you studying human anatomy, here is a great diagram of the major organs in our body!

Help your preschooler sharpen their knowledge about plants with this colorful worksheet. They'll use the word bank to name the basic parts of a plant.

Give students an opportunity to model how genes are passed down to offspring with the help of this Punnett squares worksheet!

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

Learn how sensory information is processed by the somatic and autonomic nervous systems with this engaging science worksheet! 

In this worksheet, students will read two different passages about the platypus. Kids will compare and contrast the passages, and identify the main ideas.

Explore the difference between natural and artificial selection with this engaging life science worksheet for middle grades!

Can you tell which things are living or non-living? This is a great way to introduce kids to animal and life sciences.

Challenge your first grader to put these plant life cycle stages in the correct order with this fun beginning biology sheet.