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Unit 1 of 18
Number Systems
The architecture of numbers.
Every topic follows the curriculum standard
Learn→See→Try→Explain→Verify→Challenge→Transfer→Master
Topics in this unit
4 topics. Each card opens a full topic workspace and supports all eight learning actions.
Sets of Numbers
ℕ, ℤ, ℚ, ℝ and their relationships
Properties of Operations
Commutative, associative, identity, inverse
The Distributive Property
The key structural bridge
Three-pathway connections
Study this unit at three depths — current-grade mastery, advanced thinking, and competition mathematics.