What is the most logical next event?

How to make a mobius strip
Cut a strip of paper about 6 inches (15 cm) long and 1.5 inches in width.
When cutting the strip, the measurements do not need to be accurate, these are just suggested. Try to keep the width even so that you have a long thin rectangle.
To simplify the process, you can simply cut down the edge of a plain sheet of paper to make your strip. Label the corners of the strip a, b, c, and d.