My first year of science coach I found these density cubes in the science lab and in teacher's cabinets off mixed up. Some of them were easy to tell what was what, but for others I did exactly what I would want students to do. I knew what the volume was so I measured the mass and then calculated the density and labeled all the cubes with numbers. (It took forever.) Then I begged science teachers to keep them organized so we didn't have to do it again.

Here is a lab sheet for students to do the same process. They find the mass and volume and then calculate the density to identify what each cube is made of.

The measurements do not have to be 100% exact. (Well, volume can be, make sure they are measuring in centimeters)

If your triple beam balances are like ours, they may not be exactly calibrated. Things may be off by a few grams which is why the known densities have a range.

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