There’s been a crime on Prospector’s Cove,
and a certain type of beach sand found on
the victim is your key piece of evidence.
Fortunately, your students have studied different
types of sand (and other crystals) under a
stereoscope or hand-held magnifier and can
distinguish between color, shape, texture and
luster.
So, after reviewing the stories of several
suspects and matching characteristics of sand
grains found on the suspects’ clothing to those
of the victim, your students should be able to
finger the culprit. This fun kit, developed by
teacher John Gonzales, includes materials
for 10 student groups, five different types of
sand, plus sugar and salt, 80 microscope slide
holders, and instructions.