Hello everyone,

Yesterday we met to build our full machine and it totally didn’t work out.  The dominoes kept falling over and when we tried it out it didn’t get nearly as much momentum as it did last time. We realized that the toilet paper roll bent in the bag so it wasn’t rolling the right direction.  Then if the toilet paper hit the tennis ball, it would hit it really lightly and the tennis ball would’t even hit the marble . The on the other side the cardboard wall wouldn’t stay up so we had to use a metal wall instead. Then the dominoes wouldn’t hit the wall hard enough so we had to have to dominoes hit a play dough container and that will hit the wall.

The only thing good that happened was we finished building the whole machine.

This is the video of us failing: