Ask students to separate, using physical properties, the grains in crushed samples of granite (a rock) and salt (a mineral) to build a definition of rocks and minerals.
(students; using; physical properties, the grains in crushed samples of granite (a rock) and salt; to build a definition of rocks and minerals)
students
using
physical properties, the grains in crushed samples of granite (a rock) and salt to build a definition of rocks and minerals