Multiplying Binomials Using the Distributive Property

This Multiplying Binomials Using the Distributive Property video also includes:

Where many multiplying binomial lessons introduce the tool of FOIL and move on, this video presentation really delves into the how's and why's of the distributive property. Careful treatment of distribution and explicitly written out multiplication steps make this a fabulous back-to-basics style presentation. The introduction of physically covering the non-multiplied quantity in each step is a great trick for more concrete-minded learners as they develop their math intuition and automatic processes.

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CCSS: Designed
Instructional Ideas

  • Consider having the class work problems out on individual boards, providing small rectangles as manipulatives to mimic the term-covering strategy from the video
  • Great remediation for learners struggling with FOIL, as it demonstrates the strategy behind the mnemonic
  • Consider posting online for pre-class viewing in a flipped classroom model or on-demand remediation while homework is completed after the lesson is introduced
Classroom Considerations

  • Access to both the Internet and YouTube's video streaming service required
  • Weaknesses in multiplying terms and combining like terms will rise to the surface in following along with this video, so consider having remediation handy
  • Pausing each example and between the working of the steps would allow for greater class participation and involvment
Pros

  • Narration is clear and easy to listen to
  • Each problem is fully worked and written out with a common sequence of steps for solving
  • Physical strategies to make the multiplication problem clearer are introduced and consistently used
  • Examples increase in difficulty while still maintaining the developed strategy and attack methods
Cons

  • No slides or note sheets available for printing
  • Problems for classwork and guided practice not supplied
  • No mention of using the commutative property to change to order of multiplication and ease calculations
Common Core