Shopping Bag Timeline
Click on the Shopping Bag Video Timeline to see scenes
from a STW! workshop that introduces teachers
to this task and from two Atlanta-based 7th-grade math
classrooms doing this activity, which has three phases:
- Phase 1 starts with students gathering
a wide range of shopping bags as part of a Scavenger
Hunt and bringing them to class. Students form
into teams, grab some bags, classify and place them
into piles, and then ask classmates to guess the bag
categories. Teams then attempt to identity the bag
- Phase 2 has students testing different
bags' strength by loading them and noting where they
begin to fail. Their reports attempt to link different
bag designs and failure modes -- How each type of
bag design fail?
- Phase 3 Students are given a brown
paper lunch bag, which they then redesign and make
into small shopping bags. Students conduct "fair-test"
comparisons of these designs and report on what they
learn about good and poor designs to others.