OzoSigns

In this activity we aim at verifying the rules for the combination of signs with integers. The activity can be extended in order to focus it more on coding topics.

Material:

OZOBOTs: we suggest to have an Ozobot every two students.

Card with Path: an example is provided, but it is not indispensable

Procedure:

1. Write the code to program OZOBOT to go straight till the end of the line. Then move OZOBOT, choosing both the direction (forward – positive - or backward – negative - ) and the speed (positive or negative, acting on wheel speeds).

2. Load the code in flashing mode.

3. Place OZOBOT on a straight line, facing the “+” direction.

4. OZOBOT goes towards “+” or “-”? Try all the possible combinations of direction and speed, and register the result, depending on the set direction and speed

Extensions:

1. Use variables to define direction and speed (see the extended activity example).

2. Make OZOBOT flashing different colours depending on the moving direction (see the extended activity example ).