Number Trick #1 Assume the identity of one of your students as you solve this.

1 / 20

# Number Trick #1 Assume the identity of one of your students as you solve this. - PowerPoint PPT Presentation

Number Trick #1 Assume the identity of one of your students as you solve this. Choose a number Add 6 Multiply by 3 Subtract 10 Multiply by 2 Add 50 Divide by 6.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Number Trick #1 Assume the identity of one of your students as you solve this.' - kyran

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Number Trick #1Assume the identity of one of your students as you solve this.
• Choose a number
• Multiply by 3
• Subtract 10
• Multiply by 2
• Divide by 6

### Purpose of Session

Number Trick #1Assume the identity of one of your students as you solve this.
• Choose a number
• Multiply by 3
• Subtract 10
• Multiply by 2
• Divide by 6
Number Trick #2
• Choose a number
• Multiply by 3
• Subtract 4
• Multiply by 2
• Divide by 6

What makes this trick different from the first trick?

Building & Simplifying Expressions

DirectionsExpression

• Choose a number
• Multiply by 3
• Subtract 10
• Multiply by 2
• Divide by 6
Building & Simplifying Expressions

DirectionsExpression

• Choose a number
• Multiply by 3
• Subtract 10
• Multiply by 2
• Divide by 6
Building & Simplifying Expressions

DirectionsExpression

• Choose a number
• Multiply by 3
• Subtract 4
• Multiply by 2
• Divide by 6
• Subtract your

starting number

Backtracking
• Three different ways to illustrate backtracking:
• Working up method
• Working down method
• “Cloud” method

3(x + 5) – 14 = 19

Backtracking

-4(x/2 + 9) = -8

Guess – Check – Generalize

Instructional Strategy

Story Problem #1
• Last summer, Sergio mowed lawns to earn money. He mowed 35 lawns per week and charged \$6 per lawn, for a total of \$210 per week. This summer, Sergio wants to earn an additional \$150 per week. He will raise his price to \$8 per lawn and find more customers. How many additional customers will Sergio need to find to reach his goal?
Story Problem #2
• In 36 years, Anna will be five times as old as she is today. How old is Anna?
Story Problem #3
• Vanessa works 32 hours per week at her job. Her boss offers her a full-time position (40 hours per week) and a \$2.00-per-hour raise. She says, “This is great! Now, I’ll make \$200.00 more per week!” What is Vanessa’s hourly wage before the raise?
Wrap-Up
• Summary
• Questions
• Evaluation Form

[email protected]

[email protected]

http://dmpshsmath.wikispaces.com

Thanks for all you do for Des Moines students!