Our 5th meting was on February 26th we kept testing the new marble step. And we had some troubles with it. But we kept testing it and testing it but we decided it was to unpredictable so we took it out. I guess I got my way. Also one of our group members showed us a really cool trick you could do with some baking soda lemon juice and purple cabbage juice. It is called and acid base reaction, when you mix the lemon juice with the cabbage juice the juice turns pink. But if you add the baking soda instead of the lemon juice the cabbage juice turns blue. We decided to make that our new final product. But baking soda in the cabbage juice. We chose the baking soda over the lemon juice because it is easier to contain because it is not a liquid. We also tested using a nerf gun to make the ping pong ball go ate the beginning. But the gun we used was to powerful so we used a softer gun but it was to soft so we decided to scrap the idea. In the next meting we hope to film the final run.