Twelve samples with different densities.
It's a puzzle - it's a lab - it will separate the sheep from the goats. Ask your class to identify each of 12 different samples by determining their density. Each cylinder varies in size and density since it is constructed of a different material. All are 1.3 cm (1/2") in diameter and range between 4 and 7 cm in length. Includes 12 samples, plastic storage rack and instructions.