GRAPH INTERPRETATION USING CBR

EQUIPMENT: CBR

Stopwatch

OBJECTIVE: To model different movements using the CBR.

To interpret graphs.

1) Set up the CBR. Connect the CBR to TI-83 Plus. (APPS:CBL/CBR)

2) Stand 1m from the CBR. Walk away from the CBR.

A) Describe your movement in words. (Use words like increase, decrease, time, distance…)

B) Sketch the graph of your movement. (Label your axes.)

C) Describe the slope of the graph.

3) Stand 5m from the CBR. Walk toward the CBR.

A) Describe your movement in words. (Use words like increase, decrease, time, distance…)

B) Sketch the graph of your movement. (Label your axes.)

C) Describe the slope of the graph.

4) Stand 3m from the CBR. Stay where you are and start the CBR.

A) Describe your movement in words. (Use words like increase, decrease, time, distance…)

B) Sketch the graph of your movement. (Label your axes.)

C) Describe the slope of the graph.

5) TURN IN YOUR CBR.

6) Sketch a distance vs. time graph of a person whose initial position is at 4m and walks toward the CBR for 2 sec. to 1m. Find the slope of this line.

7) Sketch a distance vs. time graph of a person whose starts at 2m and walks away from the CBR for 5 sec. to 3m and then stands still for 3 sec.

8) Describe the movement for the following graph.

TEACHER NOTES:

Assumed knowledge: positive, negative, and zero slopes

Mark the floor in 1 meter increments where the students will be working.

Have the student walking hold a book in order to obtain a solid signal from the CBR.