Lesson 4

Distributive Property

Study Content

apply a practical understanding of the distributive law to aid mental computation

Learning goals

Working mathematically

determine by example that distributive holds true for multiplication, addition and subtraction of three or more numbers but does not apply to calculations involving division (Communicating).

Description of Lesson:

Orientation [5 mins] - Review homework findings from the previous lesson's task.
Introduction [10 mins] - Introducing the “Distributive Laws” is that a*(b +c)=a*b +a*c. (Other written way: a (b +c)= ab +ac). Explain distributive property in a story. Mr.a come to meet a new house. There are two people b and c inside. If you come to someone’s house, you know you will say hello to everyone. Thus, Mr.a say hello to Mr.b first, then Mr.a say hello to Mr.c.
Body
Activity 1 [20 mins] – Distributive Property Puzzle- Teacher to hand out per pair a set of puzzles. Teacher to walk around the room to be of assistance during the activity.
Material

Puzzles

Instruction- Distributive Property Penguins Puzzle
Students will get practice with 12 distributive property problems in this puzzle. The teacher will cut the pieces out and mix them up and then students try to put them back together. The uncut puzzle can serve as an answer key. If the puzzle is put together correctly then the penguins will be back in the same order as the uncut version. There are 12 problems and solutions that will not be used around the outside edge. Tips: the same puzzle can be used more than once.
Activity 2 [10 mins] - Kahoot！ Students complete online game- https://create.kahoot.it/details/045df5b9-d4e0-4ca7-be54-ea8526e889a8
Conclusion [5 mins] - Teacher-led discussion recapping the key learning ideas and highlighting any patterns in distributive property.
Homework- Have students complete Communitive, Associative or Distributive Worksheet.

Reflection question: How were the students engaged in the puzzles activity?

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