Handout
Purple Math

Purplemath: Function Notation & Evaluating at Numbers

For Students 9th - 10th Standards
Presents a lesson on function notation. Includes interactive widget for evaluating functions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Function Notation and Linear Functions

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to convert an equation to function notation and how to input a value into a function in order to get an output value.
Activity
Interactive Mathematics

Interactive Mathematics: Introduction to Functions

For Students 9th - 10th Standards
Everything you need to know to begin working with functions is presented in this lesson. Learn the definition, notation, and use of functions then practice evaluating with the examples provided.
Handout
Purple Math

Purplemath: Operations on Functions

For Students 9th - 10th Standards
Demonstrates how to add, subtract, multiply, and divide functions. Includes an example of evaluation. Demystifies the notation.