Videos to help Algebra I students understand that an equation is a statement of equality between two expressions.

New York State Common Core Math Module 1, Algebra I, Lesson 10

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Common Core For Algebra I

Student Outcomes

Students understand that an equation is a statement of equality between two expressions. When values are substituted for the variables in an equation, the equation is either true or false. Students find values to assign to the variables in equations that make the equations true statements.

Definitions

A

A number sentence is said to be true if both numerical expressions are equivalent (that is, both evaluate to the same number). It is said to be false otherwise. True and false are called truth values.

An **algebraic equation** is a statement of equality between two expressions.

Algebraic equations can be number sentences (when both expressions are numerical), but often they contain symbols whose values have not been determined.

Exit Ticket

1. Consider the following equation, where represents a real number: √(a+1) = √a + 1.

Is this statement a number sentence? If so, is the sentence TRUE or FALSE?

3. For what value of is the following equation TRUE?

√(c+1) = √c + 1

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