For six weeks in September and October students in grades 4 to 7 were part of a class learning about probability. We started the unit by having a mystery bag in which there were ten cubes. Students had to pull out one cube at a time and then put the cube back; they did this ten times. Then students made a prediction about what color cubes they thought were in the bag. They repeated this process two more times. We also did an activity to see what color M&Ms you are most likely to get in a bag; then we combined all our data together to create bar graphs to compare how different bags of M&Ms did not have the same amount of M&Ms in them.