Lesson 24: multiplication, Addition & Arrays
Lesson 24 Learning Objectives:
Understand multiplication as repeated addition, using objects in sets of equal size
Model multiplication using arrays
Use arrays to verify commutativity of multiplication
Embedded Files
Math Talk:
See Math Talk image below
create arrays for repeated addition
Reflect:
Reflect in your math journal. Draw, create or write to share your thinking. See Lesson 1 plan for more reflection questions, real life anchoring, playful explorations and creative invitations.
What was your favorite way to model multiplication today?
What do arrays teach us that numbers alone don’t?
Where in your life could you use a multiplication mindset?
Can Two Different Arrays Equal the Same Total? If 3 × 5 = 15 and 5 × 3 = 15, are they exactly the same? Or just equal?
You see this repeated addition: 5 + 5 + 5. What multiplication sentence matches it? Could you draw it as an array in two different ways?
Math Talk:
What math lives here?
Have a conversation about this image. Be curious. Be creative. Can you see in different ways?
Which one doesn't belong?
What do you notice? What patterns and numbers do you see?
Image by LM
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