Master in Solving Equations:
In this activity, students will work on in group. They will solve their group problem and create a poster for their problem. Students have to solve the problem, justify their answers, and think about the common mistakes when others solve their problems. Then, students will do gallary walk to check other groups' work and do the same thing on their hand-out. After the walk, students will do own reflection. They will write down their common mistakes and how to prevent their mistakes on the test.
On the back side of the hand-out, students will state their position on each statement, give their reasons, and give the examples to back up their ideas. Then students will do error analysis and give the correct solutions.