Students will solve bat-related math problems, and then draw and write conclusions based upon their answers. By solving math problems, students draw several conclusions about bats. A bat's heartbeat is dramatically slower when it hibernates.
Some bat species eat a lot of harmful insects.
Carlsbad's Mexican free-tails eat mostly moths. Research is currently being conducted to estimate how many thousands of bats live in Bat Cave. The Bats of Carlsbad Caverns and Elsewhere Suggested Procedure for Question One and Two Tell students that a human's active heartbeat is about 150 times per minute. An active bat's heartbeat averages 900 beats per minute. Tell students that when the average bat hibernates, its heart rate drops to about 20 beats per minute.