Lesson 6How Do We Choose?
Learning Goal
Let’s vote and choose a winner!
Activity 1: Which Was “Yessier”?
Problem 1
Two sixth-grade classes, A and B, voted on whether to give the answers to their math problems in poetry. The “yes” choice was more popular in both classes.
yes | no | |
|---|---|---|
class A | ||
class B |
Was one class more in favor of math poetry, or were they equally in favor?
Find three or more ways to answer the question.
Activity 2: Which Class Voted Purpler?
Problem 1
The school will be painted over the summer. Students get to vote on whether to change the color to purple (a “yes” vote), or keep it a beige color (a “no” vote).
The principal of the school decided to analyze voting results by class. The table shows some results.
In both classes, a majority voted for changing the paint color to purple. Which class was more in favor of changing?
yes | no | |
|---|---|---|
class A | ||
class B |
Activity 3: Supermajorities
Problem 1
Another school is also voting on whether to change their school’s color to purple. Their rules require a
Problem 2
This school also is thinking of changing their mascot to an armadillo. To change mascots, a 55% supermajority is needed. How many of the 240 students need to vote “yes” for the mascot to change?
Problem 3
At this school, which requires more votes to pass: a change of mascot or a change of color?
Activity 4: Best Restaurant
Problem 1
A town’s newspaper held a contest to decide the best restaurant in town. Only people who subscribe to the newspaper can vote. 25% of the people in town subscribe to the newspaper. 20% of the subscribers voted. 80% of the people who voted liked Darnell’s BBQ Pit best.
Darnell put a big sign in his restaurant’s window that said, “80% say Darnell’s is the best!”
Do you think Darnell’s sign is making an accurate statement? Support your answer with:
Some calculations
An explanation in words
A diagram that accurately represents the people in town, the newspaper subscribers, the voters, and the people who liked Darnell’s best