6. Test. Improve. Test.
To wrap up this unit we tested our walls using a "demolition ball" aka a golf ball attached to a string.
Each team's wall was tested until the point of failure. The goal for the wall was to stand strong, all in one piece through all of the hits from the demolition ball. Each time a hit was withstood, the demolition ball hit from a higher angle.
After this, each team discussed how they could improve their mortar. After planning again, the walls were built a second time and retested. Each team was hoping for a stronger wall this time around.
After this, each team discussed how they could improve their mortar. After planning again, the walls were built a second time and retested. Each team was hoping for a stronger wall this time around.