Math EQUIVALENT EXPRESSIONS Objective Student will be able

Math EQUIVALENT EXPRESSIONS

Objective: Student will be able to identify that 2 expressions (equations) are equivalent. Vocabulary: Equivalent- equal Equations- a number sentence that has the same value on each side.

Examples: Example 1 Example 2 4+1=3+2 3+4=2+4

Steps to FIND out if expressions are equivalent Step 1: solve left side of equation. Step 2: solve right side of equation. Step 3: evaluate (check ) to see if the answers for both equations are equal.

5+3=6+2 Are they equivalent? Step 1: solve left side of equation. 5+3=8 Step 2: solve right side of equation. 6+2=8 Step 3: evaluate to see if they are equal 5+3=6+2 8=8 Expressions/equations are equivalent

3+7=9+3 Are they equivalent? STEP 1: 3+7=10 Step 2: 9+3=12 Step 3: Is 10=12? No so they are not equivalent.

What Do You Think? How can 1+1=3? How can 1+1=4? How can 1+1=7? How can 1+1=1? Let's find out in "1+1=5" (read aloud)

Now Together Let's Create our own problems. . . . 1+1=10 1 square + 1 hexagon = 10 sides 1+1=5 1 bicycle +1 tricycle= 5 wheels 1+1= 6 1 butterfly+1 bird= 6 wings Copy and draw.

Let's Review What does equivalent mean? What is the 1 st step to solving an equivalent equation? If they are not equal are they equivalent?