Algebra 1 Online! Henrico County Public Schools, Virginia
Module - Expressions
Introduction - Sports and Math
 Lessons 1- Variables and Expressions 2- Order of Operations 3- Open Sentences 4- Identity and Equality Properties 5- Distributive Property 6- Commutative and Associative Properties 7- Module Review

Imagine talking with your friends about who is the best professional athlete. Now, imagine talking to them and not saying anything about numbers or statistics. What a boring conversation that would be! Without numbers, we could not evaluate the performances of individuals and teams. For example, every football game is full of numbers used to compare the players and the teams. What team scored the most points? Who ran for the most yards? Who has the most touchdowns? What is a player’s passing average?

As the volume of numbers used to describe sports increased, we developed tools to measure, calculate, and store them. Stop watches measure the speed of runners in the 40 yard dash. Cameras film the form of a quarterback’s throw. Computers compile, calculate, and store numbers for later evaluation.

A study of sports since the 1970s shows that every successful move or technique is based on a law of mathematics and science.

Upon completion of the activities in this module, you should be able to:

• Use the following terms in a written paragraph to describe the key concepts of this module.
• base
• coefficient
• exponent
• like terms
• power
• set
• element
• variable
• solution
• term
• simplest form
• empty set
• Translate verbal expressions into math expressions. You should be able to write several phrases that mean addition, subtraction, multiplication and division.
• Write an expression using exponents.
• Use the order of operations to evaluate expressions.
• Solve open sentences by performing arithmetic operations.
• Recognize, use, and explain the properties of identity, inverse, and equality.
• Recognize, use, and explain the distributive, commutative, and associative properties when simplifying expressions.
• Translate verbal sentences into equations or formulas.
 HCPS 2002-