[header] How to make a mobius strip [title] Cut a strip of paper about 6 inches (15 cm) long and 1.5 inches in width. [step] 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. 
[substeps] To simplify the process, you can simply cut down the edge of a plain sheet of paper to make your strip. [title] Label the corners of the strip a, b, c, and d.