1. Focus on the Preschooler
2. Training Studies Reconsidered
3. More Capacity Than Meets the Eye: Direct Evidence
4. Number Concepts in the Preschooler?
5. What Numerosities Can the Young Child Represent?
6. How Do Young Children Obtain Their Representations of Numerosity?
7. The Counting Model
8. The Development of the How-To-Count Principles
9. The Abstraction and Order-Irrelevance Counting Principles
10. Reasoning about Number
11. Formal Arithmetic and the Young Child's Understanding of Number
12. What Develops and How
Conclusions
References
Index