cogs and windmill

april 24th
today we did the cogs. this was basically just making a cog out of lego. in this activity we found out that when we have a bigger cog it moves slower and when we have a smaller cog it becomes faster. this was quite a hard activity. when we finished we played with it and even put some people on it. with the cogs we also did a windmill. this is an example of a good cog.we also lost some parts of the windmill and had to use the others groups one.