This weekend's agenda asks students to complete a "video problem". There are two parts to this video.
Part 1: explains the strategy and provides the problem to be solved
Part 2: provides the solution and how students would explain their thinking if this were a test question.
The boys and girls are asked to write the answer to the problem in their agenda and indicate if they solved it on their own.
Edited to add: I'm sorry the videos appear so huge on your screen. I'm still trying to figure out this new computer of mine.
Math Mystery Part 1
Math Mystery Part 2 Solution