The purpose of this task to help students think about an expression for a function as built up out of simple operations on the variable and understand the domain in terms of values for which each operation is invalid (e.g., dividing by zero or taking the square root of a negative number).

### General Information

**Subject(s):**Mathematics

**Grade Level(s):**9, 10, 11, 12

**Instructional Time:**10 Minute(s)

**Freely Available:**Yes

**Keywords:**Domains, functions, algebraic operations, order of evaluation, cpalms, icpalms, illustrativemathematics.org, illustrative mathematics, tasks, mathematics, math, resource, free, freely available, problems-based learning, student activities, Florida Standards, real numbers

**Instructional Component Type(s):**

**Problem-Solving Task**

**Resource Collection:**Illustrative Mathematics