Identifying Functions
Lesson Prep
Lesson Details
Duration: 50 minutes
Learning Goal: Introduce functions with a Desmos activity, make connection about what makes a function functional using a mistake from the activity, and practice some example problems.
Prework
Make sure you have Chromebooks or some other class set of technology
Answer Keys
Classwork
Start by showing this screencast of Cannon Man multiplying
Ask students to discuss why this happened
Make the connection to the vertical line test
Move onto notes
Standards
Common Core
HSF.IF.A.1 – Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one element of the range. If f is a function and x is an element of its domain, then f(x) denotes the output of f corresponding to the input x. The graph of f is the graph of the equation y = f(x).
HSF.IF.A.2 – Use function notation, evaluate functions for inputs in their domains, and interpret statements that use function notation in terms of a context.
TEKS
A.12(A) – decide whether relations represented verbally, tabularly, graphically, and symbolically define a function