Problems are based on rhymes such as Little Boy Blue and Jack and Jill. Near the end of the book, the student is asked to think of objects that fit into a given classification scheme. Pb, 56 pages, answers included.
24 students are on a trip and various numbers of them participate in activities. Solving puzzles requires filling in all sections of the diagram and answering the question. Towards the end of the book, percentages of the students are involved in activities instead of just numbers, for extra calculations!