Free printable PDFs · answer keys included

Human body science worksheets

3 free worksheets made from real science news, with new ones as stories are published. Print, learn and check the answers.

All worksheetsK to Class 2Class 3 to 5Class 6 to 8HindiSpaceAnimals & natureHuman bodyTechnology & inventions

Kids are endlessly curious about their own bodies. These worksheets turn real research into simple stories, like how deep sleep releases the hormone that helps you grow, and why your pupils change size when you think hard. They're a natural way to talk about healthy habits too.

Class 3 to 5Humans 2.0

How Space Changes Our Genes and Bodies

Ages 8 to 10 · Source: Universe Today

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Also: K to Class 2 · Class 6 to 9

Answer key
  1. What problem does space cause for astronaut's bodies?A. Muscle loss
  2. What machine do scientists use to pretend there is no gravity?A. Random Positioning Machine
  3. What does the genome mostly consist of?A. DNA molecules

Big word: genome

Class 3 to 5Humans 2.0

Your pupils change size depending on how you are thinking

Ages 8 to 10 · Source: Popular Science

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Also: K to Class 2 · Class 6 to 9 · हिंदी

Answer key
  1. What happened to people's pupils when they counted out loud?A. They got bigger
  2. What did volunteers do in the experiment?A. Counted out loud and silently
  3. Which country were the scientists from?A. Japan

Big word: dilate

Class 3 to 5Humans 2.0

Scientists found how deep sleep helps your body grow

Ages 8 to 10 · Source: ScienceDaily

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Also: K to Class 2 · Class 6 to 9 · हिंदी

Answer key
  1. What does growth hormone help build?A. Muscles and bones
  2. When does the body release growth hormone?A. During deep sleep
  3. Which university did this sleep research?A. University of California, Berkeley

Big word: hormone

How to use Osmo worksheets

  1. Read together first. Read the story aloud, or let your child read it to you. Pause on the big word.
  2. Circle the answers. Three questions check understanding. The answer key is on each card above.
  3. Do "Your turn". The drawing, building or experiment task is where the learning sticks. Ask "why?" and "how do we know?"
  4. Write a question. The last box is for your child's own question about the story. Curiosity is the point.

Worksheet questions parents ask

Are these worksheets really free?

Yes. Every worksheet on this page is a free PDF you can print at home or for your class. Osmo Plus subscribers can also print a worksheet for every new story in the Osmo app.

Where are the answers?

Each worksheet card has an Answer key button showing the correct option for all three quiz questions. The "Your turn" activity is open-ended, so there's no single right answer.

Which class or grade should I choose?

Kindergarten to Class 2 sheets suit ages 5 to 7, Class 3 to 5 suit ages 8 to 10 and Class 6 to 8 suit ages 11 to 14. The same story is written at each level, so siblings can do the same topic together.

Where do the stories come from?

Each story is based on a real article from a science publisher such as NASA, ESA, ScienceDaily or MIT News, rewritten for kids with the help of AI and approved by a person. The source is credited at the bottom of every sheet.

Can teachers use them in class?

Yes. Printing worksheets for your own students and showing them on a classroom screen is fine. Please don't resell them or republish them on other websites.

More free resources: printable science worksheets guide · reading comprehension for Class 3 to 5 · the Osmo blog

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