Ropes and their uses for the sailor are the focus of this unit. Students begin the study by taking apart a section of rope and putting it back together, testing strength at various stages. They also practice tying different knots and learn about the uses of ropes in sailing. After investigating the mechanics of a block and tackle, students…

Indicating that the rationale for teaching physics, to which curricula are ultimately directed, must focus on the needs of both future scientists and non-scientists alike, trends in physics curricula and instruction are viewed. Such changes are suggested to have taken place in response to growth in information, to changing perceptions of the…