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# Lesson 5: Adding and Subtracting Like Fractions

Operations with Fractions Unit Plan - Year 5 and Year 6 | Lesson 5 | 60 minutes

A 60 minute lesson in which students will add and subtract fractions with the same denominator.

## Preparation

##### Equipment

- Counters
- Dice

## Lesson Plan

### Tuning In

- Draw a large circle on the board and divide it into eighths. Ask a student to come up to the board and colour in two pieces. Underneath the circle, write two eighths as a fraction.
- Draw an addition sign next to the first circle, then draw a second circle of the same size. Divide this second circle into eighths. Ask a second student to come up to the board and colour in five pieces. Underneath the circle, write five eighths as a fraction.
- Draw an equals sign next to the second circle, then draw a third circle of the same size. Divide this third circle into eighths. Ask a third student to come up to the board and show the answer of the addition sum on the third circle. Underneath the circle, write seven eighths as a fraction. Ask the students:
- What do you notice about the numerator of the answer?
- What do you notice about the denominator of the answer?
- Why does the numerator change, but the denominator does not?

### Teacher Instruction

- Discuss the steps involved in adding and subtracting like fractions, as outlined on slide 6 of the
*Adding and Subtracting Fractions PowerPoint.*Encourage the students to suggest some examples of like fractions. - Display and discuss the annotated examples on slides 7-9. Emphasise the importance of reducing the answer to its lowest terms.

### Guided/Independent Learning

- Display the review questions on slide 10. Monitor and support the students as they individually complete the questions on the slide.
- Display and discuss the answers to the review questions on slide 11. As the students correct their answers, encourage them to raise any queries or concerns.
- Provide the students with a copy of the
*Adding Fractions With Common Denominators Worksheet*. Monitor and support the students as they individually complete the worksheet.

### Wrapping Up

- Correct the worksheet as a class. Ask the students to draw a smiley face (I can do this!), a straight face (I’m getting there!) or an unhappy face (I need some help!) on the top of the worksheet to indicate their understanding of the lesson’s objective.

## Differentiation

### Extending Students

- Allow fast finishers to play the
*Fraction Frenzy Board Game*in pairs (Game A only).

### Supporting Students

- Allow students who are finding the concept of adding and subtracting fractions challenging to use concrete materials to help them with the questions. For example, cut and laminate the fraction wheel pieces from the
*Fraction, Decimal and Percentage Wheels*so that students can physically manipulate the pieces to answer each question.

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