Table. 1.

Configuration of the photoelectric effect contents in textbooks.

Textbook Physics I textbook Physics II textbook
Contents A1 B1 C1 D1 E1 A2 B2 C2 D2 E2
a. Introduction - 0.2 - - - 0.4 0.3 0.25 0.2 -
b. Discovery 0.1 - 0.12 - - 0.2 0.5 0.35 - 0.1
c. Definition 0.1 0.2 0.12 0.3 0.1 0.1 0.2 - - 0.05
d. Inquiry - 1.6 0.76 0.5 1 0.4 1 1.6 3.15 1
e. Phenomenon 0.32 0.55 0.5 - 0.2 1.3 1.8 1.8 1.65 1
f. Principle 1.15 0.75 0.5 0.4 1 2 1.6 1.4 0.8 1.57
g. Contradiction 0.33 0.2 - 0.3 - - 0.3 0.6 0.2 0.28
h. Application 1.5 1 2 2 1.7 0.6 - - - -
sum 3.5 4.5 4 3.5 4 5 5.7 6 6 4
New Phys.: Sae Mulli 2021;71:842~854 https://doi.org/10.3938/NPSM.71.842
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