- Mathematical thinking at grade 1: Introduction (Investigations in number, data, and space)
- How Many in All?; Counting and the Number System; Grade Level K (Investigations in Number, Data, and Space)
- Building Number Sense; the Number System: Investigations in Number, Data, and Space Curriculum Grade 1
- Measurement Benchmarks: Estimating and Measuring (Investigations in Number, Data, and Space, Grades 5-6)
- Number Games & Story Problems: Addition & Subtraction (Investigations in Number, Data, and Space Series)
















