How do we solve math stories with totals of 6, 7, and 8? Join Mr. Hammer for this lesson as we use cubes, drawings, and number sentences to solve math stories with totals up to 8! For this lesson, youâll need 8 objects to count along with a pencil and paper or whiteboard and dry erase marker. You will also need some markers or crayons for the problem set. If you have access to a workbook, or a printer, we also suggest accessing the Problem Set and lesson template available using the links below the video.