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I have five children.  Three of them are daughters.  Several years ago we visited Yosemite National Park.  I mentioned Yosemite in one of my earlier lessons when we learned about big trees.  You can see some of those trees here is this photo.  Yosemite also has many rivers as well as fallen trees that lay across the water.  It's fun to walk on the fallen logs to get from one side of the river to the other.  It's a wonderful way to the park.  If you look closely at the photo below you will notice something about one of my daughters.  She has a cast on her arm.  She has a broken arm.  Just a few days before this trip she had been wrestling and playing with her cousins and accidentally broke her arm.  It wasn't serious, only an accident, but it scared everyone involved.  Of course, we quickly went to the doctors and while we were there we were sent to see an orthopedist. An orthopedist is a doctor who specialist in the study of bones.  He told us the break in her bone would heal by itself - that if she kept it still the two parts of the bone would grow back together.  "That's what the cast is for!" he said.  "The cast will keep her arm from bending so that it can heal."
You might know someone who has broken a bone.  Maybe you yourself have broken a bone before.  That's what we will be discussing today!  How do broken bones heal?  Let's learn together and get started!

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Essential Question:  How do broken bones heal?
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?

How are compasses made?

-Aiden, 4th Grade

Where does salt come from?

-Fotini, 3rd Grade

How does a washing machine work?

-Rachel, 3rd Grade

Watch the video to discover the answer and don't forget to vote for next week's question. There are mysteries all around us. Have fun and stay curious!

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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? How are compasses made? -Aiden, 4th Grade Where does salt come from? -Fotini, 3rd Grade How does a washing machine work?

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Read "Bones On the Go!" and answer the comprehension question in your science notebook.
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 bones?
Talk to someone in your home and explain to them how broken bones are able to heal.
"I know ___________________________________________________________."

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Can you make a sling to hold your arm in place like the one Doug had? Try using things you can find around your home. Some things you could try are a shirt, a paper bag, or a belt. Look back at the video for ideas on how to do it. Remember, you want your arm to be lifted up and held very still. Practice putting your sling on a friend or family member's arm!