Be on the lookout

Because the command to turn off the motors is hidden in the On For block, beginners sometime do not realize that the motors must be turned ON again if they are to run.

What you can do: An analogy to plain English commands might be helpful. Ask students what’s the difference between asking a person to “walk” and asking a person to “walk for 2 minutes.” Point out that even though the word “stop” wasn’t used in the second request, a person will know to stop after 2 minutes, but will continue walking when a time is not specified.

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