Eighth grade students at Duval Charter School at Westside were learning the difference between chemical and physical changes and how they can tell the difference as the chemical changes would form bubbles and create a gas.
There were four parts to the experiment to coordinate with a group of 4 students. Each student was doing a different part. So one was checking for vinegar and baking powder, the second vinegar and baking soda, the third water and baking powder, the fourth water and baking soda. After each part the students would pause, do an all-write consensus, Kagan Strategy, to determine if it was a chemical or physical change and to determine from a checklist which process told them what it was.