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This lesson focuses on the science practice of structure and function.  When scientists discuss the structure and function of an object, they ask themselves - what are it's parts and what do those parts do? In this lesson we will ask ourselves - Why do our skeletons have so many bones?
This was the lesson we were last working on before we were separated by the quarantine.  We had watched and discussed the video and some of you had even begun to outline your hand for the activity.  I've done this activity in the past with former students.  It's one of my favorite and I really wanted you to be able to complete it from home.  Go ahead and review the video lesson in Step #1, then gather the materials to complete the X-ray hand activity.  It's pretty spectacular and will look great hanging in a window from your home.

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Essential Question:  Why do our skeletons have so many bones?
Click on the image below to play video.

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Voting for this episode is now closed. Would you like to vote on the most recent poll?

I pulled three questions from my jar. Which question do you want to explore next week?

Do dogs sweat?

-Benny, 3rd Grade

How does a refrigerator keep things cold?

-Maeve, 2nd Grade

Who invented hot air balloons?

-Donovan, 5th Grade

Try out a hands-on extension activity from Mystery Science.

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Why do our skeletons have so many bones?

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Voting for this episode is now closed. Would you like to vote on the most recent poll? I pulled three questions from my jar. Which question do you want to explore next week? Do dogs sweat? -Benny, 3rd Grade How does a refrigerator keep things cold? -Maeve, 2nd Grade Who invented hot air balloons?

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Step #2:  Complete the X-ray Hand Activity

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Step #2:  Complete the X-ray Hand Activity

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Click on image below to play activity video.
Supplies needed:  a sheet of paper (use white if you do not have colored paper), a dark crayon (either black, purple or blue), a Q-tip, and a small amount of cooking oil.

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Why do our skeletons have so many bones?

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In this mini-lesson, K-5 students consider what would happen if their body didn't have bones.

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Read "Move Your Muscles!" and answer the comprehension questions in your science notebooks. Click on the passage below to expand the text.

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What did this lesson make you curious about? What other questions do you have about skeletons?
Talk to someone in your home and explain to them why our bodies have so many bones?
"I know ___________________________________________________________."