You have to find the stream of integers that add up to equal the sum found in the finished box. If that isn't clear for you make sure to check the lesson and the review sheet as well. There are easily 10 pages of puzzle problems here. You will also find a quiz towards the bottom of the page.
A warm-up and Do Now sheet can be found towards the bottom of the page. The lessons and review sheets can be found more towards the top of the page.