Astronomy 10, Spring Semester 2008
Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q5.1
Students were asked the following clicker question (Classroom Performance System, einstruction.com) in the middle of their learning cycle:
[0.3 points.] List the following features on the Moon from oldest to youngest:
I. Craters partially filled in with flat lava plains.
II. Craters on top of flat lava plains.
III. Flat lava plains.
(A) I, III, II.
(B) III, I, II.
(C) II, I, III.
(D) III, II, I.
Correct answer: not revealed yet (see discussion below).
Student responses
Section 4160
(A) : 4 students
(B) : 10 students
(C) : 18 students
(D) : 2 students
Section 5166
(A) : 22 students
(B) : 9 students
(C) : 13 students
(D) : 9 students
After showing the lack of consensus in their replies, students were asked to discuss their responses with each other before responding again.
Student responses
Section 4160
(A) : 5 students
(B) : 9 students
(C) : 11 students
(D) : 9 students
Section 5166
(A) : 19 students
(B) : 9 students
(C) : 9 students
(D) : 18 students
Correct answer: (A)
It is easiest to start with the flat lava plains for comparison, which represent the lunar maria. The craters on top of the flat lava plains are newer than the maria, while the craters partially filled in with lava are older than the maria.
Students did not successfully attain the correct answer after conferring with each other. Note that response (D) gained the most from pre- to post-discussion, interestingly enough.
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