Discusses two strategies that provide concrete-thinking students with opportunities to develop and use formal or critical-thinking skills. Describes using task analysis and long-term investigations in the classroom. (YP)

Presents a discussion on the significance of questioning techniques in the development of critical thinking skills. Stresses that teachers can increase a student's mental engagement by using appropriate wait time, increasing nonevaluative responses, avoiding rephrasing a question, and avoiding questions requiring a yes or no response. (RT)

Reviews recent research addressing the problem of matching students' cognitive levels to science textbooks. Suggests that most texts are written above the level of the students for whom they are written. Promotes experiential learning at the middle level and concentration on "right thinking" rather than on "right answers." (CW)

Attempts to show that not only can density be taught to lower ability pupils but that by doing so, there is the possibility of assisting pupils to develop their reasoning powers. Lists teaching activities that help in this process. (CW)