The Trends in International Mathematics and Science Study (TIMSS) is a comparative assessment of the achievement of students in many countries. In the present study, a rigorous independent evaluation was conducted of a representative sample of TIMSS science test items because item quality influences the validity of the scores used to inform…

We examine the equivalence of two construct-a-concept-map techniques: construct-a-map with created linking phrases (C), and construct-a-map with selected linking phrases (S). The former places few constraints on the respondent and has been considered the gold standard; the latter is cost and time efficient. Both their products and processes are…

Presents research on the scientific question-posing capabilities of 10th-grade students (n=127) who were studying air quality in a cooperative way using the jigsaw method. Finds that the difference between students at high and low academic levels to the extent of increase in both number and complexity of posed questions was significant. Contains…

Explains the results and findings of the Cognitive Analysis Project (CAP) which was used to evaluate the intellectual development of children from grades 10, 11, and 12 by analyzing the use subjects made of written language in solving problems and explaining phenomena. (HM)