# Lesson: Use Proportions to Solve Real World Problems

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### Lesson Objective

SWBAT solve proportions from word problems.

### Lesson Plan

 Element/Time Teacher Student expected response Do Now (8:30 – 8:40)/(10:00 –10:10) ·         Teacher walks around to greet students and check in with students about their do now and homework ·         Students complete 2 review/2 current unit problems independently HW Check ·         Teacher walks around to help/spot check student HW Students correct homework from board with problems shown.  Students will ask questions in order to review misunderstood questions Mental Math (8:40 – 8:50) /(10:10 – 10:20) ·         Teacher reads and reveals a series of 6 problems – helping students to think of strategies to help students solve the problems ·         Teacher pulls sticks (cold call) to have students answer the questions ·         Students answer questions mentally, if stick is called they can answer and explain their answer choice. Mini Lesson (8:50 – 9:25)/(10:20 – 10:55) Intro: ·         Yesterday we worked on solving for the unknown in proportions.  ·         Today we are going to be doing a very similar thing; however, today we will see real world situations where proportions occur. ·         When reading a proportion problem you should first notice a ratio or a comparison between two things.  That is your clue that you should be setting up a proportion. ·         Next, we should set up a proportion box like this – show students – and label the different things being compared ·         We should put the numbers in the correct places. ·         Then lastly we should solve our proportion Guided: ·         Have students indentify what is being compared ·         Have them create a proportion box Independent: ·         Students will work independently to solve proportions from word problems   Closing: ·         What did we learn? ·         Why is important? ·         What are some common mistakes? What does successful work look like/sound like? Skills Time (9:35- 9:50) /(11:05-11:25) FDP computation

### Lesson Resources

 Notes Proportions in Word Problems   Notes 3,335 CW Setting up Proportions from Word Problems MODIFIED   Classwork 2,154 CW Setting up Proportions from Word Problems   Classwork 1,923 HW Solving Proportions from Word Problems   Homework 2,016 CW Setting up Proportions from Word Problems 1,223 U8 L7 Finding the Unknown Proportion Word Problems 1,195