Mt. Vernon, NY: 1964/1963 1st US, tan SOFTCOVER, red titles; 133 pp including Sources and Index. Reference mathematics.
A collection of essays on teaching mathematics with the Cuisenaire rods, some of which could be followed as curriculum, Introducing the Concept of the Set, some expressing the author's opinions: Why my books are as they are. The excitement generated by these new ways of approaching mathematics for young children in midcentury classrooms permeates the book.
CONDITION: Good Plus; ink name on cover, creased spine, wear to spine ends, pages flat and clean. Item #22692