This is a practice page designed to get students working with using volume and mass measurements to calculate density of an object. This should be done prior to the use of "Identifying Substances By Density" lab included in the store. There are two versions with identical problems that can be used. The first page is to be used if it is going to be assigned as individual practice following class level work doing these types of density, mass, and volume problems. The second page is if you watch to use the cooperative learning strategy called "Rally Coach". This requires one page per pair of students. They fold the page "hot dog style" and label one side "A" and the other "B". You can have them decide who is which letter or do some kind of assigning technique (there are a lot of these given in Kagan training and heir literature). They then alternate solving the problems on their side of the sheet. They must show and talk through everything they are doing to solve the problem to their partner. The partner is listening and watching and coaching is the student needs it. It is important to group/air students appropriately in your groups for these types of activities. High student should be with Low-Medium, High-Medium with Low. They continue this "Rally Coach" until all problems are solved. These are then reviewed as a class.
I like to use the algebra circle or triangle to teach how to solve these. It helps students determine which equation is used for calculating volume, mass, or density without doing the algebra to move the variables around to isolate them. They like it a lot, and it is great for students who struggle in math as the mathematical process of getting the equations is not what is being assessed or taught.