This document was originally produced for use with thirteen- to fifteen-year-old pupils of low mathematical attainment. The material has not been extensively tested, and is best regarded as a collection of ideas for development. Reproduction of any of this material for use by teachers with their own pupils is encouraged. The sheets are arranged so that they may be cut up and stapled to form 16 small "topic booklets." In addition, there are eight sheets to be cut up into 16 sections each for use as cards in a calculator game. The three main approaches of the document are: (1) to give pupils success, via the calculator, and encourage more positive attitudes towards mathematics; (2) to allow students to view the order and pattern of certain mathematical concepts that more successful students are already able to perceive; and (3) to lead to confidence and proficiency in basic mathematical processes without the calculator. (MP)