# Recipes & Ratios - Mobile learning - Remix

## Part 1: Lesson Description

### Abstract

Proportional relationships are everywhere. They are used to compare professional athletes and to help shoppers get the “best bang for their buck” at the grocery store. They help us build models and designs and are used in many business applications. This lesson plan introduces proportional relationships, ratios and unit rates at the grade 6/7 (C) level and requires adult learners to identify and compare ratios using the Padlet application.

### Learner Audience / Primary Users

This lesson is intended for adult learners with minimal English language competence who are interested in learning math in a useful context through a mobile device.

### Educational Use

• Curriculum / Instruction
• Assessment

English

### Material Type

• Instructional material
• Emails
• Slides
• Assessment
• Mobile application

### Keywords

• Designers for Learning
• Ratios
• Proportional Relationships
• Unit Rates
• Problem-based Learning
• Gathering Information

15 minutes

### Targeted Skills

Key skills covered in this lesson include:

• Identifying and comparing ratios
• Problem-solving using proportional relationships

### Learning Objectives

By the end of this lesson, the learner should be able to:

• Identify ratios and briefly describe the concept of a ratio using an example, e.g., a ratio of 3:4 means that for every 3 of one thing, there is 4 of another (CCR, 6.RP.1)
• Identify unit rates a/b can be associated with a ratio a:b with b ≠ 0 (CCR, 6.RP.2)
• Use proportional relationships to solve simple real-world problems (CCR, 6.RP.3).

### College & Career Readiness Standards (CCRS) Alignment

• Subject: CCRS Mathematics
• Domain:Ratios and Proportional Relationships
• Standard Description: “Understand ratio concepts and use ratio reasoning to solve problems.” (CCRS 6.RP), specifically: “Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.” (6.RP.1); “Understand the concept of a unit rate a/b associated with a ratio a:b with b ≠ 0, and use rate language in the context of a ratio relationship. For example, “This recipe has a ratio of 3 cups of flour to 4 cups of sugar, so there is 3/4 cup of flour for each cup of sugar.” “We paid $75 for 15 hamburgers, which is a rate of$5 per hamburger.”21” (6.RP.2);  and, “Solve unit rate problems including those involving unit pricing and constant speed. For example, if it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in 35 hours? At what rate were lawns being mowed?” (6.RP.3b)

### Prior Knowledge

Learners should have basic English and numeracy skills.

### Required Resources

Mobile device (smartphone or tablet) and internet access

• Mobile Learning Remix Author: Amanda Weber
• Special thanks to Carolyn Wilson for developing the original "Recipes and Ratios" lesson

## Part 2: Lesson

### Instructional Strategies and Activities

1. Warm-Up and Introduction

Instructor sends email to students.

Time: 1 minute

'Ratio Brainstorm: Where and when they you used or seen ratios being used in the “real-world”? Can you think of some examples? Check out these pictures that introduces Ratios, Unit Rates and the language of proportions by highlighting different “real-world” situations where ratios are used.'

Examples of ratios used in sports

Examples of ratios in art

2. Presentation / Modeling / Demonstration

Instructor sends email to students.

Time: 6 minutes

'Here is a link to a presentation that teaches you to identify and compare ratios. Take a few minutes to review the information before we complete our exercise. If you need an app to open the file, the Prezi app is available for free from the App store (www.apple.com/appstore). Adobe Flash Player will also open the presentation.'

Prezi

3. Practice

Instructor sends an email to students.

Time: 8 minutes

'Now that you have more experience in identifying and comparing ratios, go to the Padlet site and follow the instructions on the screen. Your answers will be reviewed by the instructor and you will receive private feedback via email.'

4. Evaluation

Instructor emails feedback to each student.

Ratio

Unit Rate

Proportion

## Part 3: Supplementary Resources & References

none

### References

Recipes and Ratios - Original