In this activity, students create delectable models of building structures with gumdrops and toothpicks, and examine their strength and stability.
Investigate the strength of different shapes in building design.
- What shapes made by the toothpicks and gumdrops were the strongest? Squares, rectangles, triangles?
- Did the width of the base make a difference?
- When buildings collapsed, which portions stayed in one piece?
- Why did certain parts of buildings not collapse?
- How can you use strength and collapse information to build a better tower?
What To Do
- Individually or in groups, students build towers by sticking toothpicks into gumdrops, using gumdrops as connectors.
Create your own challenges or try some of these:
- The building must have 2 floors and be at least _____ cm tall.
- The building may not extend out past a given base.
- The building cannot use more than ____ gumdrops.
- The building cannot use more than ____ toothpicks.
You can do the challenges with or without time limits.
- Test the structures using an earthquake simulator or simply by shaking the table beneath.
- Try a structural strength test: What configuration of a Gum Drop Structure can support the most weight and is most stable? HINT: let the structures dry and harden overnight for this experiment.
Science World Resources | Structures faites de jujubes | French version of this resource
PBS Learning | Triangles: Testing the strength of a Gum Drop Dome
Government of British Columbia | Emergency Management BC | Earthquake Information
Government of Canada | Natural Resources Canada | Earthquakes Canada