This activity is a great way to review metric measurement in science and have fun while your at it. There is an engaging activity measuring a rectangular prism, and study guide/graphing chart to use with your students. I typically have them complete the activity in pairs, complete the double bar graph in their groups. Then I use the information from their graphs and ask a few questions about how to read the graphs and tell differences between the different measurements. It's a fantastic way to review in an engaging tone.