- Building number sense: The number system (Investigations in number, data, and space)
- Mathmatical Thinking at Grade 5
- How Many in All?; Counting and the Number System; Grade Level K (Investigations in Number, Data, and Space)
- Mathematical thinking at grade 1: Introduction (Investigations in number, data, and space)
- Building Number Sense; the Number System: Investigations in Number, Data, and Space Curriculum Grade 1

















