I included the answer key on the second page, and the link to the lesson I am using for the activity.
Now, onto 5th grade. Here is the idea and sheet for my bigs as they build catapults for marshmallow shooters. I can't wait to see the marshmallows fly.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgua9-Q3-oVFjgJo7VXxkGbcbPaUgUOMsvWwUYZHdpE59UwxAbVU5r72FLuk4VkPagL-_wbaeFT9ufsG_nTjXMWJpP2LswbnOZ36zYww3AJEXP771F5_7rA-q7D6PH9rBCl_07ipZiMcv8/s320/marshmallow+catapult.jpg)
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