Biological - NIH Office of Science Education - National Institutes of ...

as a means of indicating how science is done. Ask students if their
data showed such a phase shift.
Question 2. During the past several activities, you have learned about
different types of cycles associated with sleep. List three different
cycles and provide a brief description of each one.
Three cycles associated with sleep are 1) the NREM/REM cycles that
occur during sleep (ultradian rhythm); 2) the cycling of the need to
sleep (homeostatic regulation); and 3) the circadian rhythm governing
our propensity to sleep. It is more important that students recognize
that there are different rhythms associated with sleep than that
they remember the technical names for them.
Assessment: Having
students write their
answers before sharing
their thoughts with the
class gives you an
opportunity to evaluate
each student’s understanding.
It also helps
students organize their
thoughts before class
discussion.
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Student Lesson 3