Challenge+Problems

Brain Teaser #1 and the solution

[|Various Math Problems and videos of the solutions:]
 * 1) choose your set
 * 2) read the problem carefully and solve (make sure you have a final answer and know how you got your answer)
 * 3) watch the solution video
 * 4) write one thing that was similar between your solution and the video
 * 5) write one thing that was different between your solution and the video
 * 6) make corrections to your solution if necessary
 * 7) go to the next problem in the set