Basic Units: Measurement
Density Samples
PIRA Class: 1A10.70

Purpose
To explore the relationship between mass, density, & volume

Description
Students make relative tactile mass observations of different material rods.
1. Rods of identical shape, size, & color are passed around the class.
2. Students will note the greatest difference in mass between the wood & lead rods.
VARIATION: Float the "Floating Rock" in a bucket of water.

PEDAGOGY: Use the crystal models in discussions re. different materials compactness

Equipment
Density rods, Crystal Models
Optional: Floating Rock