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Unit 6 of 18
Functions
The central object of modern mathematics.
Every topic follows the curriculum standard
Learn→See→Try→Explain→Verify→Challenge→Transfer→Master
Topics in this unit
5 topics. Each card opens a full topic workspace and supports all eight learning actions.
Function Definition
One input, exactly one output
Function Notation
f(x) as language
Domain & Range
What goes in, what comes out
Identifying Functions
Tables, maps, and graphs
Three-pathway connections
Study this unit at three depths — current-grade mastery, advanced thinking, and competition mathematics.