Eggs

 We tested more egg cars today. I gave them the option to do art or work on egg cars. Most groups chose building and testing their cars. I still have two groups that need to finish building and testing. The rest finished today.

It's been an interesting process, seeing them use their budgets to build the cars. All but one or two groups had trouble incorporating wheels in the design. Most slid down the ramp as opposed to rolling. We had to create little bumpers on the side with meter sticks so the car didn't roll off the edge of the board.

The original challenge is to have the board start at 1.5m, but I thought that would be too high so everyone started off at the 1m height. If it didn't crack too bad, we bumped it up to 1.5m for an extra challenge (one that didn't effect their grades). I probably should've gone with the extra challenge to begin with because hardly anyone's egg cracked at the lower level. And it's not because their eggs were super well fortified. Oh well, things to change for next time.  One didn't crack at all, even at the 1.5m height. They used a blown up balloon to slow the car down and be a buffer at the end.

This would be a fun challenge to try again when they're in 7-8th grade. See what they remember. See if they can come up with a better design incorporating more physics. So many of them were just stuck on getting their car to roll down the ramp!