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| 3 triangles will join together to make a pyramid! |
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| Our completed project |
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| Talking with the engineers |
We made catapults today! We had a field trip on the Smartboard because we skyped with DiscoveryE from the University of Alberta in Edmonton. They were engineering students. They told us that they build and plan and even help kids make their own toys like we did today.
We used shapes to build the catapult. We used popsicle sticks, coffee stir sticks and a dixie cup and
lots of tape! We had to build triangles to make the base of the catapult because it is a strong shape.
Before we built our machine, we tested some shapes. The triangular prism held 3 books BUT the cylinder held 19 books! They told us that is why there is a lot columns in historical buildings.
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