Given an ideal test item in which 100 percent of the ten students in the high scoring group answer correctly and 20 to 25 percent of the ten students in the low scoring group select each of the four alternatives. An index of discriminating power of .80 for a test item means that it
a. has an ideal level of difficulty
b. has satisfactory discriminating power
c. is too easy for most students
d. should be revised or eliminated
Question 2
Which statement best summarizes science education during the 20th century?
a. a gradual shift from a constructivist to a big ideas curriculum
b. an abrupt shift from direct to indirect instruction during the mid 1950s
c. a gradual shift from a big ideas to a constructivist curriculum
d. consistent use of the same instructional methods
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