In science class, we are making marble roller coasters. This is because we are trying to answer a question, do larger marbles take longer thrill rides? We are testing this question by rolling different size marbles down our tracks and timing them. We started building these roller coasters last week and we are going to finish this project by Friday. During this unit we are also learning about how friction affects the marble and to how to support the foam we are using as the tracks. Most people thought that this was a fun activity.