# Research Expressions

**Work Time**

# Research Expressions

Research to learn about the difference between a numerical expression (such as 2 + 3) and a variable expression (such as *x* + 2).

- Search using a few different keywords to find resources. Follow any links that look useful.
- Watch video tutorials about expressions.
- Review worked examples of expression problems.
- Look up expression in the dictionary.

Write your answers to the following questions:

- How is a numeric expression different from a variable expression?
- What are five things you think you will learn about expressions this year?
- When is it useful to research a concept?