Hermit Crab Races
Concepts Covered:
Number sense, concepts, operations,
and measurement
Sunshine State Standards:
MA.A.3.2.3
MA.B.4.2.2
MA.B.3.2.1
Materials:
 Spreadsheet program
 Hermit Crabs
 Meters Sticks
Student Arrangement:
Students work in small groups
Procedure:
 Arrange students in small groups.
 Have students measure the length of the hermit crabs (from one end
of its shell to the other).
 Show students how to measure how far the hermit crab runs in 5 seconds.
 Students should enter their data into a spreadsheet. Have students
calculate the speed of the hermit crabs by entering the formula, distance
equals the rate times the time (d = r x t), into the last column on
the table.
 Have students measure the length of their bodies with a meter stick.
 Using the ratio in the template, have students enter their measurements
and predict how fast they can go.
 Go outside or in a gymnasium. Have half of the class run for 5 seconds.
The other half of the class will measure how far the students run with
meter sticks.
 Have students enter their data in their tables in the template. In
the last column, have students enter the formula to calculate speed.
 Have a discussion with the class comparing their speeds to their prediction
and to the hermit crab’s speeds.
Extension:
 Have students make bar graphs
for the data they collect. They can make it with paper and pencil or
with a spreadsheet program.
 Have students write paragraphs
and/or an essay about their results and the process of the experiment.
 Any animal, bug, rodent,
etc. can be used for this experiment it dies not have to be hermit
crabs.
