Writing formulas from sequences

Use this applet to understand the relationship between an arithmetic sequence and the formula for finding the nth term. For example, if the first four terms of a sequence are

7, 10, 13, and 16, what would be the 50th term in this sequence?

Application: Tiles around a pool

This applet allows you to practice writing an algebraic expression that gives the number of tiles needed to go around a pool.

Multiple representations of expressions

Teaser and introduction goes here. Sample problem here.

Review writing expressions

Review writing expressions with addition, subtraction, multiplication, and division. Sample problem here.


This is the cover page for the Expressions Book.

Evaluating expressions

Evaluating an expression means to replace the variable with an actual number. Sample problem here.

Expressions with multiplication and division

Expressions with multiplication and division. Sample problem here.

Expressions with addition and subtraction

Writing expressions involving addition and subtraction. Sample problem here.

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