Show What you Know About Ratios

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Objective

SWBAT: • Show what they know about ratios.

Big Idea

What do students understand? What gaps do they have in their understanding? Before the quiz, students play some online games to review.

Lesson Author

Andrea Palmer

Somerville, MA

Grade Level

Sixth grade

Subjects

Math

Number Sense and Operations

proportions

Fractions

Standards

6.RP.A.1

Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities. For example, "The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak." "For every vote candidate A received, candidate C received nearly three votes."

6.RP.A.3

Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

6.RP.A.3a

Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios.

6.RP.A.3c

Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent. (Combine and Relabel)

6.RP.A.3d

Use ratio reasoning to convert measurement units; manipulate and transform units appropriately when multiplying or dividing quantities.

MP1

Make sense of problems and persevere in solving them.

Do Now

5 minutes

See my Do Now in my Strategy folder that explains my beginning of class routines.

Often, I create do nows that have problems that connect to the task that students will be working on that day. Today I have students review expectations for computers, since we will use them for review. I call on students to share the expectations for retrieving and using laptops.

Online Quiz Review

15 minutes

Notes:

Each student needs access to a computer for this section of the lesson.
Here are some fun online games that require students to apply what they know about ratios:
- http://mathsnacks.com/ratiorumble.php
- http://www.mathplayground.com/common_core_state_standards_for_mathematics_grade_6.html

Before students get their laptops, I preview the websites and the possible games they can play. I call students to get their laptops. As students play, I walk around and monitor student progress.

With three minutes left, I tell students to log off and plug their laptops back into the cart.

Quiz

30 minutes

I give students the Quiz. Students engage with MP1: Make sense of problems and persevere in solving them. If students do not finish in the allotted time, they set up a time (preferably that day) to come in and complete it. I use this data to inform my instruction. If students struggle with a concept, I will spiral it into do nows and homework assignments. I may also add a few problems on that topic to the next quiz.

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