Category: Middle School (6-8)

Eucalyptus

Grade: 3-8

99% of the trees in our neighborhood are eucalyptus trees. The town planning commission wants to get rid of some of these trees because they spread too quickly. However, the people in my neighborhood like the trees. The commission argues that their new eucalyptus tree removal plan will cut down so few eucalyptus trees that 98% of the trees in our neighborhood will be eucalyptus trees. If the plan only involves removing eucalyptus trees, what percent of the existing tress in my neighborhood would the plan remove?

Anticipatory Set

Lesson Plan

Black Line Master

Carlos’ Cell Phone

Grade: 3-12

Carlos is thinking of changing cell phone plans so he is comparing several different plans.

Plan 1) Pay as you go plan $0.99
Plan 2) Per minute $30 monthly fee plus $0.45
Plan 3) Per minute $40 monthly fee plus $0.35
Plan 4) Per minute $60 monthly fee plus $0.20
Plan 5) Per minute $100 monthly fee for unlimited minutes

What will Carlos need to consider to make his decision? How can Carlos figure out which plan is best for him?

Anticipatory Set

Lesson Plan

Black Line Master

Buying MP3s

Grade: 3-12

You have decided to use your allowance to buy an mp3 purchase plan. Your friend Alex is a member of i sound and pays $1 for each download. Another one of your friends, Taylor, belongs to Rhaps and pays $13 a month for an unlimited number of downloads. A third friend, Chris, belongs to e-musical and pays a $4 monthly membership fee and $0.40 a month per download. Each friend is trying to convince you to join their membership plan. Under what circumstances would you choose each of these plans and why?

Anticipatory Set

Lesson Plan

Black Line Master

Eucalyptus

Carlos’ Cell Phone

Buying MP3s

Bucket of Trouble

Bubble Gum

Birthday Balloon Bash

Bicycles and Tricycles

An Apple a Day