Everyday statements were also used as a prompt for giving a numerically based probability estimate, as part of the Level 4 curriculum for `understanding and using [the] probability scale from 0 to 1' (DES, 1989, p. 53). For example, in `clothes line', one of the activities in the BEAM `What's the Chance' activity pack (BEAM, 1992), sentences were hung on a string across the classroom in a position of estimated likelihood, as shown in Figure 1.