Lecture 19 - Force and motion continue. Develop conceptual idea of force and motion. Students first distinguish between moving objects that are under the influence of a force and moving objects that are not under the influence of an unbalanced force. When there are forces acting on an object so that it changes speed or direction, they think about the forces that are affecting the motion. They identify the kinds of forces and explain the relative strength of the forces. They consider how to measure the forces and how to diagram (vectors or free-body) the multiple forces acting on a single object. | Lecture # 19 SCIENCE 1 ASSOCIATE DEGREE IN EDUCATION Force and motion continue Teaching Tips and strategies Develop conceptual idea of force and motion. Students first distinguish between moving objects that are under the influence of a force and moving objects that are not under the influence of an unbalanced force. When there are forces acting on an object so that it changes speed or direction, they think about the forces that are affecting the motion. They identify the kinds of forces and explain the relative strength of the forces. They consider how to measure the forces and how to diagram (vectors or free-body) the multiple forces acting on a single object. Teaching Tips and strategies continue More advanced Student can explore the relationship between mass and acceleration. They should construct an idea of the newton as a special force where a mass of 1 kilogram is accelerated to 1 metre-per-second squared. As they begin to recognize consistencies in the relationship between force and motion, encourage them to hypothesize that the relationship exists at the microscopic level as well. They will revisit this idea later when they consider energy at the microscopic level. Students learn that the measure of each kind of force is expressed in units specific to that force, such as a ‘spring constant’ for compression or stretch of a spring. The three most important ideas about force that all Students should know include: A force has a measurable value Its unit is the newton It includes the values of acceleration and mass Teaching Tips and strategies continue Investigating forces and linear motion with a model car Students begin the unit with the challenge to design and build a toy car given available materials. They work in teams to design, build, and test their initial ideas. Students begin a more in-depth exploration of the motion of their vehicles. Groups collect data about the distance their vehicle travels and the time it takes. Investigating . | Lecture # 19 SCIENCE 1 ASSOCIATE DEGREE IN EDUCATION Force and motion continue Teaching Tips and strategies Develop conceptual idea of force and motion. Students first distinguish between moving objects that are under the influence of a force and moving objects that are not under the influence of an unbalanced force. When there are forces acting on an object so that it changes speed or direction, they think about the forces that are affecting the motion. They identify the kinds of forces and explain the relative strength of the forces. They consider how to measure the forces and how to diagram (vectors or free-body) the multiple forces acting on a single object. Teaching Tips and strategies continue More advanced Student can explore the relationship between mass and acceleration. They should construct an idea of the newton as a special force where a mass of 1 kilogram is accelerated to 1 metre-per-second squared. As they begin to recognize consistencies in the relationship
