Although primarily written for pupils in secondary schools, these puzzles do not require a high level of syllabus knowledge, making them accessible to a wide range of ages and abilities. There are 180 puzzles, offering two similar ones on each of a wide variety of topics. Each pair of puzzles combines two levels of difficulty making them ideal for use in mixed ability classes. They can be used as a daily displayed competition for pupils to enter and a winner can be picked from the day's entries. It helps to increase interest, to reinforce mathematical vocabulary and of course the puzzles are fun to do! Complete with answers.