Students will use their observation skills,
knowledge of compositional features,
and other clues provided to identify rock
chips in a natural gravel. The chips are
representative of 12 common rock types
from the igneous, sedimentary, and
metamorphic groups. Three larger rock
samples, one from each group, are also
included for comparison and analysis.
Each set comes with a one-pound bag of
gravel, sorting tray, forceps, magnifiers,
testing tools, study guide, a teacher’s
guide, and student copymasters, all
contained in a convenient storage box.
Average chip size: 3/8– 1/2”.