Density is a tricky concept for Middle School students to master. Density cubes help my students make this abstract concept more concrete. This exploration asks students to take measurements of mass and length, use formulas to calculate volume and density, and make observations about floating and sinking. The follow up questions ask students to make deliberate connections between what density looks and feels like and what density means mathematically.
The exploration ends with an optional section using metric conversions to compare the density of the blocks when we change the units.
The download includes a fully editable word document, so you can customize the exploration to fit the needs to you and your students. I have found quality density cube sets on Amazon to use with my students if you do not already own these materials.