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[Mathematics Content Standards]
[One-to-one correspondences](for section 1.1)
[Counting](for section 1.1)
[Notes on number systems](for section 1.2)
[Equal addend subtraction algorithm](for section 4.2)
[Introduction to Supplements]
[Lab 1][Answers to Lab 1]
[Lab 2][Answers]
[Lab 3][Answers]
[Lab 4]
[Lab 5]
[Lab 6]
[Lab 7]
[Lab 8]
[Lab 9][Lab 9 number lines]
[Lab 10]
Ocean of Zeros 1
Ocean of Zeros 2
[More working backward problems]
Class Exercises
Section 5.1
Section 5.2
Section 6.1
Section 6.2
Section 6.3
Section 7.1
Section 7.2
Homework
HW 5.1
HW 5.2
HW 6.1
HW 6.2
HW 6.3
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