Partial Product Strategy to Multiply  http://youtu.be/IJhVQ6xOAcA

Box Multiplication Strategy 2 X 1 Digit- https://youtu.be/nUlNZZi1qXg

Box Multiplication Strategy 2 X 2 Digit- http://youtu.be/d0-a4GLXT-Y

2 X 2 Digit Instructional Video- https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-mult-div-topic/cc-4th-multiplication/v/multiplying-2-digit-numbers

2 X 2 Digit Practice Game- http://www.kidsmathtv.com/learn/multiply-2-by-2-digit-numbers-game-for-4th-grade-monster-board-game/