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ANSWERS
PART 2 - Operation
- Slowly flip the pages. What do you see? (animated picture
of the flapping sequence)
QUESTIONS
- How many pairs of wings does a dragonfly have (two pairs)
- Do the right and left wing of the pair beat together?
(Yes. For this flipbook the left and right wings go up and
down together)
- Do both pairs have an upstroke that occurs at the same
time? Explain. (No. The front wings go down when the rear
ones go up. This is to avoid large up and down forces on
the body, to balance out the vertical forces due to the
front and back wings)
CRITICAL
ANALYSIS
Why were three stacks of frames used instead of one? (So that
two flap sequences could be seen with one flip, providing
a longer time of viewing.)
SEQUENCING
YOUR THOUGHTS
Suppose the frames were placed in the reverse sequence with
#1 at the top. What would you see now? (The action would seem
to go backwards, as occurs when running a videotape or movie
backwards)
CURRICULUM
LINKS
| Biology/Life
Science: |
| Wing
Structure |
|
| Physics:
|
| Motions
and Forces |
|
NATIONAL
SCIENCE STANDARDS (Grades
5-8)
| Science
As Inquiry-Content Standard A |
| Students
should develop abilities necessary to do scientific inquiry, |
|
Students should develop an understanding about scientific
inquiry |
| Physical
Science -Content Standard B |
|
Students should develop an understanding of motions
and forces |
| Life
Science -Content Standard C |
|
Student should develop an understanding of structure
and function in living systems |
 Back
to Teaching Guide
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