Kamii, Constance (2000). Young Children Reinvent Arithmetic: Implications of Piaget’s Theory (2nd ed.) (for first grade)
Kamii, Constance (2004). Young Children Continue to Reinvent Arithmetic, 2nd Grade: Implications of Piaget’s Theory (2nd ed.)
Kamii, Constance (1994). Young Children Continue to Reinvent Arithmetic, 3rd Grade: Implications of Piaget’s Theory
Kamii, Constance, and DeVries, Rheta (1993). Physical knowledge in preschool education: Implications of Piaget’s theory. (Original work published 1978)
Kamii, Constance, and DeVries, Rheta (1996). Group games in early education: Implications of Piaget’s theory. Washington, DC: National Association for the Education of Young Children. (Original work published 1980 and shown below)
For the books above, please check your local bookstores and public libraries.
Many of the books listed above might also be available from these and other online-stores: