scratcher (ifat) forms for conceptual test …...scratchers and implementation student response test...

Scratchers and Implementation Student Response Test Scores

Scratcher (IFAT) Formsfor Conceptual Test

Questions inIntroductory Courses

July 29 2015Nicole Ackerman

Agnes Scott College

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Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

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Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

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Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

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Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

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Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

2 / 6

Scratchers and Implementation Student Response Test Scores

USING IF-AT FORMS

1st Choice

2nd Choice

3rd Choice

Wrong

Identification

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Scratchers and Implementation Student Response Test Scores

IMPLEMENTATION

Conceptual“Clicker”

Questions

Lecture

Own pace,in Groups

In-Class Review

8 MCQuestions

(50%)

In-Class Tests(x4, 50 min)

18 MCQuestions

(50%)

Final Exam(3 hr)

MC = Conceptual Multiple Choice

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Scratchers and Implementation Student Response Test Scores

EXAMPLE QUESTION

For the image shown to the right ofa conducting bar moving in a mag-netic field, which of the images be-low correctly represent the inducedcharge distribution?

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Scratchers and Implementation Student Response Test Scores

STUDENT FEEDBACKHOW DOES THE USE OF SCRATCHERS IMPACT TEST ANXIETY?

Positive

Anxiety0

20

40

60

80

100

%o

fRes

po

nse

s 20132014

“I like the scratchers a lot. I think itwas very helpful because itprevented me from second guessingmy answers, and I was able to moveon ‘for good’ after using thescratcher.”

“The scratchers added a little bit ofstress, but the benefit of them isworth it. It was good to haveimmediate feedback, and I like thatthere is an opportunity for partialcredit on multiple choice questions.”

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Scratchers and Implementation Student Response Test Scores

CORRELATION WITH “KNOWLEDGE”DO SCRATCHERS PROVIDE BETTER ASSESSMENT OF PHYSICS KNOWLEDGE?

0.2 0.4 0.6 0.80

0.2

0.4

0.6

0.8

1

CSEM or FCI Post Score

Co

rrec

t2n

dA

nsw

ers

(%o

fPo

ssib

le)

E&M 2014Mech 2014E&M 2015RegressionR2 = 0.248Guessing

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