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Laabri

RCN Lesson 13: Adding and Subtracting Fraction

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Last updated over 3 years ago
17 Nsɛmmisa

Develop Understanding

Today's Learning Goal: (G4, U3,L8 and U6, L9)

  • Reason about subtraction of fractions with the same denominator using a diagram.

  • Decompose fractions greater than 1 into a sum of a whole number and a fraction less than 1.

  • Reason about addition of fractions with the same denominator using a diagram.

  • Represent fractions in different forms. eg.(mixed -number fractions, improper fraction)

Today's Materials:

  • Laptop

  • Laptop charger

  • Pen/Pencil/Paper (optional)

Please complete the Jump Start (activator). You have 5 minutes before we review. This is independent it should be silent.

Reminders:

1. Ready for class

2. No cellphones

3. Volume must be low.

4. Read and follow all directions

5.) Take your bag off and immediately begin the Activator.

Jump Start: Which One Doesn't Belong?

On Desmos (Slide 1) :

Sign in "Continue without signing in"

Enter code displayed on board.

student.desmos.com

Launch - Adding and Subtracting Fractions: (30 min)

Watch 2 5 minute videos.

I'll model

We do one together

You do one!

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Activity 1- What is the Sum?

Add the following fractions below:

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(Reduce to simplest form.)

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(Reduce to simplest form.)

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Activity 2 - What's the Difference?

Subtract the fractions below:

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Cool Down - (5 min)

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(Reduce to simplest form)

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(Reduce to simplest form)

Closure Questions:

  • What is this fraction called?

  • What is this fraction called?

  • What is this fraction called?

Fractions are another way to write [blank]

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