Introduction
Session 1: What is a Number System?
Session 2: Number Sets, Infinity, and Zero
Session 3: Place Value
Session 4: Meanings and Models for Operations
Session 5: Divisibility Tests and Factors
Session 6: Number Theory
Session 7: Fractions and Decimals
Session 8: Rational Numbers and Proportional Reasoning
Session 9: Fractions, Percents, and Ratios
Session 10, Grades K-2: Classroom Case Studies
Session 10, Grades 3-5: Classroom Case Studies
Session 10, Grades 6-8: Classroom Case Studies
Appendix, including Glossary
