This title features: super photocopiable series to develop problem solving skills and mathematical thinking in primary pupils; challenging activities that include extension ideas for the more able; activities that develop spatial visualisation, logical reasoning, establishing criteria, interpreting, analysing, organising and using information, strategic thinking and using patterns; extensive background information about problem solving skills; and, teachers notes to accompany copymaster activities, which include mathematical objectives, materials, background information, list of possible difficulties pupils will encounter and extension activities. It provides answers and curriculum links.