Page 25 - Super Scratch Programming Adventure -1st Edition

Click these buttons above
the Stage to start ( ) and
stop ( ) the game.

Next, click the Pen palette
and drag out the four green
Pen blocks shown on the
right. Now when Scratchy
moves, he’ll draw the magic
star web as well!

Uh-oh! Occasionally, when you run your
There’s
program, there is a software bug. This
a bug!
is the most exciting part of computer
programming: discovering an error
in something you have made and
then solving the problem. In this case,
sometimes Scratchy will draw an odd
line at the beginning of the program.
If we drag Scratchy anywhere else
on the Stage, he draws an extra line
because he starts in the wrong place.
Try dragging Scratchy around and
running the program multiple times
by clicking to see if you can spot
the bug.

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