Identifying Parts of Expressions

This lesson introduces expressions, defining them as combinations of numbers, symbols, and operations. It explains terms as parts of expressions separated by plus or minus signs, and describes components like variables, coefficients, and constants. The lesson differentiates between expressions and equations, highlighting that an equation includes an equal sign. By the end, students should understand how to identify parts of an expression.

What is an expression?

• A single number

• A paragraph of text

• A sentence with a subject and predicate

• A combination of numbers, symbols, and operations

How can terms in an expression be identified?

• By finding parts separated by plus or minus signs

• By identifying the largest number

• By looking for multiplication signs

• By counting the number of variables

What is a coefficient in an expression?

• A number divided by a variable

• A number multiplied by a variable

• A number subtracted from a variable

• A number added to a variable

What is a constant in an expression?

• A term that is only a number

• A term that is always zero

• A term that changes value

• A term that includes a variable

When does an expression become an equation?

• When it includes a multiplication sign

• When it contains only numbers

• When it has more than one term

• When it is equal to something