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Notes for Session 1, Part C
If you are working in a group, discuss first how the number line gets filled up and why we need more numbers than just the counting numbers. This question will be revisited in the next session.
<< back to Part C: Building the Number Line
Algebraic numbers also include some complex numbers (e.g., , the solutions to x2 + 1 = 0). Such numbers, however, are excluded from this activity and this session since they cannot be represented on the number line.
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