This study explores measurement of a construct called knowledge integration in science using multiple-choice and explanation items. We use construct and instructional validity evidence to examine the role multiple-choice and explanation items plays in measuring students' knowledge integration ability. For construct validity, we analyze item…

Discusses research on middle school science learning and instruction that suggests how generative models of scientific phenomena can be developed. The Computer as Learning Partner curriculum is introduced as a curriculum that provides a firm foundation for lifelong learning through the use of authentic questions. (SLD)

When comparing performances across four versions of Computer as Lab Partner curriculum, increases in understanding were found when students predicted outcomes and reconciled results, and students used a heat-flow model of thermodynamics to integrate their experimental results. Argued is that curriculum must explicitly motivate students to…