Hello parents! Please have your child watch the videos first. Then, they can practice by playing the addition and subtraction games. At the end, have them take the quiz to check for understanding. Completing this unit might them a week or more.
Source: http://www.youtube.com/watch?v=tkkL7kQUyTI
Source: http://www.youtube.com/watch?v=WRb5iK5fZD0
Source: http://www.youtube.com/watch?v=FKPl42IkRMw
