ABSTRACT
There are several ways to make these strips for this activity. Some suggestions are: ● use the paper strips as they are presented at the end of this lesson; ● photocopy the strips onto card and laminate them. Students could then write numbers
in the squares, using drywipe pens and the strips could be reused; ● attach pieces of Velcro to both the strips and the individual numbers. These can also
be reused.
