試題詳解

81. David Tall conducted a study to investigate 16 year old students’ concept image and concept definition. The students were asked to draw the tangent to the following graph at the origin. Some students did not cope with the task and asserted that “…because the tangent should touch the line at one specific point but this tangent would touch it constantly.” Which of the following best describes the cause of the students’ answer?
(A)Almost always the concept definition will be evoked by students when solving problems.
(B)Almost always the concept image will be evoked by students when solving problems.
(C)The concept definition includes a form of words used to specify the concept, however, the students were asked to draw a tangent in this case.
(D)The concept image includes a form of words used to specify the concept, however, the students were asked to draw a tangent in this case.