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About
Crabs
Lesson
No. 2
OBJECTIVES:
1.
Students will observe a live Blue Crab.
2.
Students will be able to distinguish between a male
and female Blue Crab.
BACKGROUND:
The
students should have had an opportunity to explore the
Internet prior to this lab to learn more about the Blue
Crab. (See
related links in Lesson #1
DESCRIPTION:
This
is a lesson that should be conducted in a science lab or a
classroom that is equipped with a holding tank and
scientific instruments used when observing live specimens.
MATERIALS:
Live
Blue Crabs in a Holding Tank
§
Ruler
§
Magnifying
Glass
§
Blue
Crab Lab Sheet
PROCEDURE:
1.
Complete a KWL chart.
Students should record all the information they
already Know about the Blue Crab.
All the information they Want to know after
completing the lab and seeing a live crab.
2.
Pass out Lab
Sheet
Discuss procedure and have students complete
hypothesis prior to lab.
3.
Upon lab completion, complete the “L”
section of the K-W-L.
DISCUSSION
QUESTIONS:
See
lab sheet.
ASSESSMENT:
1.
Complete “L” of K-W-L
2.
Assess
conclusion section of lab sheet.
EXTENSION:
Related Links
ELA
1.
Complete work on creative story (*Link
to Lesson #1 describing activity)
2.
Do a research report on the Blue Crab using the
following outline:
§
Introduction
§
Body
Paragraph #1 (Physical Description of Blue Crab)
§
Body
Paragraph #2 (Feeding Habits)
§
Body
Paragraph #3 (Habitat)
§
Body
Paragraph #4 (Behavior – Movement, Mating, Migration)
§
Body
Paragraph #5 (Conclusion – Include any interesting facts
that you learned)
MATH
1.
Calculate the number of movements per minute to
determine movement per hour.
2.
Measure specific body parts (*Link to Diagram –
www.vims.edu/adv/ed/crab/guts3.html
)
SOCIAL STUDIES
Research
the importance of the Crabbing industry on the Chesapeake
Bay Community.
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