If you have had a great deal of trouble completing Problem Solving Set 7 then watch the video below for an instructional walk-through.  This will help you to prepare for your Problem Solving test in the 2nd school-week of January (once we have completed set 8).

This first video is to explain how to do the first examples

This one has the real “meat and potatoes” of the lesson showing you how to attack those “working backwards” problems such as the marbles.