Movement model

With this model, students build trajectories step by step. They acquire the skill: characterizing a movement; they reinvest the notion of speed value and the teacher introduces the notions of direction and sense. Straight uniform and varied movements as well as circular movements are fully addressed using this model. Functions and uses that guarantee a perfectly adequate response to the new program: Straight uniform movement With the movement model, the student makes an object move at a constant speed. They observe the movement of a marked point and for a constant Δt measured with a chronometer, they mark the successive positions of the point. Then, they conclude on the nature of the movement. Thus, they exploit the relationship between speed, distance, and duration. The movement is reproducible, allowing for the sharing of results. Varied rectilinear movement The movement model has an adjustable acceleration and deceleration setting controlled by a potentiometer to obtain an increasing or decreasing object speed. The acceleration or deceleration ramp is known and reproducible, the results are quickly evaluated, and sharing is facilitated in the class. Circular movement With the provided "disk" accessory, the student studies uniform circular movements. Using the same procedure as before, the student notes the different positions of a point on the disk and concludes on the nature of the movement. In addition, the student experimentally determines the rotation frequency of a mobile. Presentation video: [youtube link](https://www.youtube.com/watch?v=b1O8hGxEdz0)

- 1 block with motor and control - 1 power supply block - 1 block with pulley - 1 cord (non-stretchable, thin diameter wire for reduced friction) - 1 disk with notch - 1 object to place on cord or disk