##
* *Reflection: Adjustments to Practice
Working Backward with Percent: Practice Makes Perfect! - Section 2: Explore

Sigh.

If you watched my video posted in the lesson, you know I did not have the highest of hopes, but was just giving the scavenger hunt a try. I will say that 3 out of my 4 classes did AWESOME. They worked really well together, they were able to find their mistakes. I did not have too many students have to call me over - they actually went back and reworked problems when they could not find their answer in the room somewhere. I have included a sample of student work :)

There is alway one, however. In my lowest block, the lesson was a total fail. FAIL. I was bouncing around the room like a ping-pong ball. The lowest of the students were off-task. I ended up sitting four off-task boys at a table with me and just working on the homework assignment with them. They were off-task because they didn't know what to do - and didn't care to learn. What strikes me as odd, however, is that I did this SAME activity in cut and paste form last week (Chain Reaction) and this class was the most successful. Perhaps the rainy day? Maybe the planets are out of line...I don't know - but I wanted to cry by the time that class was over. I will not do another scavenger hunt with that group again, I will stick with the controlled environment of the cut and paste :)

*Adjustments to Practice: Scavenger Hunt Reflection*

# Working Backward with Percent: Practice Makes Perfect!

Lesson 12 of 21

## Objective: Students will be able to identify the unknown value in a percent problem and apply the correct procedures for solving for that unknown.

#### Launch

*10 min*

**Opener: **As students enter the room, they will immediately pick up and begin working on the opener –Instructional Strategy - Process for openers. This method of working and going over the opener lends itself to allow students to construct viable arguments and critique the reasoning of others, which is **mathematical practice 3**.

**Learning Target: **After completion of the opener, I will address the day’s learning targets to the students. For today’s lesson, the intended target is, “I can determine the unknown value in a percent problem and apply the correct procedures to solve for that unknown.” Students will jot the learning target down in their agendas (our version of a student planner, there is a place to write the learning target for every day).

**Thoughts from Me! **As students begin to work on problems, they will be looking for patterns and/or repeated reasoning (**mathematical practices 7 and 8**). What types of problems require division? Students will need to be precise when determining the information they are given so that they are able to accurately find the missing value (**mathematical practice 6**).

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#### Explore

*45 min*

**Scavenger Hunt: **Scavenger Hunt Video

**Homework: **Since student pairs will finish the scavenger hunts at different times, I have placed the homework assignment on the back of the scavenger hunt paper. Thus, as students finish the activity, I will quickly check their paper, and then send them to their seats to work on the homework assignment. I wouldn't want the students to be bored... :)

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#### Summary

*5 min*

**Instructional Strategy - Table Discussion: **To summarize this lesson, I am going to ask students to discuss at their tables clues that they find in a problem that helps them determine if they are given the new or the original value. I will choose three tables to share out at random by drawing playing cards.

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##### Similar Lessons

Environment: Urban

Environment: Rural

###### The Defining Pi Project, Day 1

*Favorites(4)*

*Resources(31)*

Environment: Urban

- UNIT 1: Introduction to Mathematical Practices
- UNIT 2: Proportional Reasoning
- UNIT 3: Percents
- UNIT 4: Operations with Rational Numbers
- UNIT 5: Expressions
- UNIT 6: Equations
- UNIT 7: Geometric Figures
- UNIT 8: Geometric Measurement
- UNIT 9: Probability
- UNIT 10: Statistics
- UNIT 11: Culminating Unit: End of Grade Review

- LESSON 1: Percent Models - A Visual Approach to Percents
- LESSON 2: Markdown Percent Models - What Percent Are You Paying?
- LESSON 3: Markup Percent Models - Percents Over 100?
- LESSON 4: Percent Models Review - Practice, Practice!!
- LESSON 5: Percent Models Test
- LESSON 6: Finding Percents
- LESSON 7: Finding Percents Fluency - It's a Chain Reaction!
- LESSON 8: Multiple Percents - What happens when you have a discount and tax?
- LESSON 9: Markup and Markdown Review - Are you paying more or less?
- LESSON 10: Markup, Markdown, or Just a Percent? TEST
- LESSON 11: Working Backwards with Percents - What happens when a problem is not straightforward?
- LESSON 12: Working Backward with Percent: Practice Makes Perfect!
- LESSON 13: Performing with Percents - Can you bust some common misconceptions?
- LESSON 14: More Practice with Percents - Practice Makes Perfect!
- LESSON 15: Working Backward and Forward...TEST!
- LESSON 16: Percent Change - By What Percent Did the Value Change?
- LESSON 17: Percent Change - More Practice
- LESSON 18: Simple Interest - Understand Your Money!
- LESSON 19: All Percents Review
- LESSON 20: All Percents Test
- LESSON 21: Proportional Reasoning and Percent - Can you apply the concepts? (3 Day Lesson)