This paper examines the process of high school students' planning investigations in the chemistry laboratory across two consecutive academic years in terms of their actions and their progress. The context is a set of five inquiry-based laboratory tasks in which participants (9th and 10th graders, 14-15 and 15-16 years of age) are required to plan…

The process of diffusion is described as the movement of a substance from an area of high concentration to an area of low concentration. In this article, the authors present a novel way to introduce students to diffusion through the use of an analytical puzzle. This exercise engages students in active learning through a thought provoking exercise…

Presents an inexpensive activity to stimulate student interest in biotechnology that was developed in partnership with a biotechnology company. Focuses on the use of DNA by a commercial laboratory; describing the analysis procedure; important uses of DNA technology in modern society; and ethical, social, and legal issues related to biotechnology.…

Examines the effects of investigative, open-ended, and inquiry-based labs on students' ability to ask high-level and open-ended questions. Recommends combining direct instruction in questioning with increased background information to improve students' questions. (Contains 19 references.) (YDS)

Introduces a cytology laboratory course consisting of experimental design, laboratory preparation, laboratory implementation, and scientific write-up. (Contains 11 references.) (YDS)