Standard 7-1 page 41, Grades K-4
Develop meaning for the operations by modeling and discussing a rich
variety of problem situations
Standard 2-2 page 26, Grades K-4
Reflect on and clarify their thinking about mathematical ideas and
situations
Standard 3-2 page 29, Grades K-4
Use models, known facts, properties, and relationships to explain their
thinking
Standard 4-3 page 32, Grades K-4
Recognize relationships among different topics in mathematics