MATHEMATICS
Clement, R. (1991). Counting on Frank. Milwaukee, WI: Gareth Stevens Publishing.
Greenes, C. (1989). Math Games: Sparkling Activities for Early Childhood Classrooms. Allen, TX: DLM Teaching Resources.
Lasky, K. (1994). The Librarian Who Measured the Earth. Boston: Little, Brown & Co.
Stickels, T. (1995). Think-ercises: Math and Word Puzzles to Exercise Your Brain. Pacific Grove, CA: Critical Thinking Press & Software.