< Back to Place Value to 100 Home
Alberta Education. The Alberta K–9 Mathematics Program of Studies with Achievement Indicators. Edmonton, AB: Alberta Education, 2007.
Alberta Education. Diagnostic Mathematics Program, Division I, Numeration. Edmonton, AB: Alberta Education, 1990.
Baratta-Lorton, Mary. Mathematics Their Way: An Activity-Centered Mathematics Program for Early Childhood Education. Reading, MA: Addison-Wesley Publishing Company, Inc., 1976.
Howden, Hilde. "Teaching Number Sense." Arithmetic Teacher 36, 6 (February 1989), pp. 6–11.
National Council of Teachers of Mathematics. Principles and Standards for School Mathematics. Reston, VA: NCTM, 2000.
Richardson, Kathy. Assessing Math Concepts: Grouping Tens. Bellingham, WA: Mathematical Perspectives, 2002.
Van de Walle, John A. and LouAnn H. Lovin. Teaching Student-Centered Mathematics: Grades K–3. Boston, MA: Pearson Education, Inc., 2006.