This is the first specifically
**PIPPIN** application that we have done. It takes advantage
of the very small size of the unit.

What you do is download the full-size version of
the course and print it out on an A3 sheet or on an A4 sheet that you
photocopy up to A3. It is best to bring it into a software
application that will allow you to adjust the size so that it prints
correctly. Word will do but you probably have something better. Make
sure that you only adjust the **size** and not the
**shape** or the course will not work.

This is a fairly mathematical activity that takes the form of a mathematical investigation.

The basic activity is to make **PIPPIN** follow
the line. Start off going from start to finish, then try all the
other ways. It turns out that there are an enormous
number.

For each turn, **PIPPIN** can either turn
left or right (e.g 120degrees right = 240 degrees left).
Alternatively it can turn the "wrong" way by 180 degrees less the
"right" angle followed by changing direction. So that left 120
followed by forwards something is equivalent to right 60 followed by
backwards the same something.

For any of the above, you can add 360 degrees to
the turn angle (real turns don't stop at 360). In some cases you can
add an extra 720 degrees as long as the total turn is less than the
maximum 999 degrees that you can enter into **PIPPIN**.

By the time the students have found all these possibilities, they have a good idea of what turning angles are.

The large version of the course is here.