Intro to Expressions Guided Lesson

​Intro to Expressions Guided Practice

​Learning Objective: SWBAT distinguish between expressions and equations

• ​What you will need

  • Intro to Expressions Packet (fill it out as we go through this lesson

  • Pencil

• During this Guided Lesson

  • No side conversations, no movemement around classroom, raise hand for needs/questions

  • Attempt all problems (you must apply knowledge in Independent Practice, DOL, and tomorrow's Formative Assessment
    

Multiple Choice

What is the most important difference between an expression and an equation?

• they're spelled different

• whether it has an equal sign or not

• only equations have variables

• only expressions have variables

Multiple Choice

8 (12) - 20

Is this an expression or equation?

• Equation, because it contains numbers and operations, but no equal sign

• Expression, because it contains numbers and operations, but no equal sign

Multiple Choice

37 - x = 90

Is this an expression or equation?

• Expression, because it contains an equal sign

• Equation, because it contains an equal sign

Multiple Choice

seventeen minus two

Is this an expression or equation?

• Expression, becasue it is a phrase with numbers and an operation, but no equal sign

• Equation, because it is a phrase with numbers and an operation, but no equal sign

Multiple Choice

19 + 4x + 8

Is this an expression or equation?

• Expression, because it contains numbers and variables, but no equal sign

• Equation, because it contains numbers and variables, but no equal sign

Multiple Choice

five times ten is fifty

Is this an expression or equation?

• Equation, because "is" is another way to say "equals"

• Expression, because "is" is another way to say "equals"

Multiple Choice

4 (25) = 100

• Equation, because it contains an equal sign

• Expression, because it contains an equal sign

Labelling

Label the following:

Coefficient: an number in front of a variable (letter)

term:

expression: may contain variables, operations, and numbers

operation: add, subtract, multiply, or divide

variable: a symbol (letter) that is connected to a number by mulitplication

Constant: a number by itself

term: a variable, number or combination that is seperated by an operation

Drag labels to their correct position on the image

coefficient

term

constant

operation

expression

variable

Multiple Choice

A letter that represents a number is called a _____.

• variable
• coefficient
• constant
• term

Draw

Draw the following Expression: (use cards A and B as examples)

3x - 3

Draw

Draw the following expression (Use cards A and B as an example)

x - 3 + x

Multiple Select

Looking at cards A, B, C, and D, which are equivalent. (Choose more than 1 answer)

• Card A:

  3x + 3

• Card B:

  2 + x + x + 1

• Card C:

  2x - 3

• Card D:

  x - 3 + x

Open Ended

Catherine is asked to write n expression that is equivalent to card A. Write an expression she could write

Multiple Choice

Kar and Brenden write two algebraic statements below. They claim that theirt statements are equivalent. Do you agree or disagree?

KARI BRENDEN

34 - 15 = 19 34 - 15

• Agtree they have the same value

• Agree they are both expressions

• Disagree, Kari wrote an equation, while Brenden wrote an expression

Multiple Choice

Four statements are written below. Choose the answer that is NOT equivalent to the rest.

• fifty plus twelve

• 50 +12

• 50 + 6 + 6

• fifty plus twelve is sixty two

Multiple Choice

Read the problem and fill the missing part of her solution

• +4

• -1

• -4

• +1

Multiple Choice

A ticket to a trampoline park is priced at $6.50. When three friends purchased tickets, the expression 6.50(3) can be used to determine the total cost. What other expression can be used to determine the total cost?

• 6.50 x 2

• 6.50³

• 6.50 + 6.50 + 6.50

• 6.50 ÷ 3