Can you find all the number pairs that make 10? Join Mr. Hammer for this lesson as we use a story about birthday presents, objects, and number bonds to find number pairs that make 10. For this lesson, youâll need 10 objects to count and move around as well as a pencil and paper or a 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 suggest accessing the Problem Set available using the link below the video.