Most Recent Review
Good engineering design, weak concept development
This unit provides a novel engineering design task. However, the development of the science concepts that are needed for the design task depends overly on rote instruction and does not provide enough depth of understanding of the mechanism of heat transfer for students to use in design. For example, students should develop a model for heat transfer by collisions and use that to determine which materials will slow down heat transfer. The unit should use a computer simulation of heat transfer by particle collisions to accompany the hand holding simulation and allow students to visualize heat transfer mechanisms. The unit needs revision to meet the NGSS ideas about solutions to problems driving student learning. Also, merely telling students that they have a misconception and what the correct conception is is unlikely to resolve the misconception. Pedagogy is weak in this unit.