# Lesson 10: Introduction to Decimals – Tenths

Exploring Fractions and Decimals Unit Plan - Year 3 and Year 4 | Lesson 10 | 60 minutes

A 60 minute lesson in which students will explore tenths as fractions and in decimal notation.

## Lesson Plan

### Tuning In

- Write the sentence, ‘A decimal is…’ on the board. Ask the students to suggest possible endings to this sentence. Record these on the board to be referred to later in the lesson. Do not be concerned if the students have very few suggestions at this stage.

### Teacher Instruction

- Display and discuss slide 5-7 of the
*Introducing Decimal Numbers PowerPoint.*Encourage the students to suggest other examples of decimal numbers being used in everyday life, as well as some other examples of situations where decimal numbers are needed in order to be precise. - Explain decimal place value to the students, as outlined on slides 8-10. Write some additional examples of decimal numbers on the board and ask the students to identify which digit holds each place e.g. Which digit is in the tenths column?
- Demonstrate how tenths may be written as a fraction and in decimal notation, as outlined on slides 11-13.

### Guided/Independent Learning

- Display the review questions on slide 14. 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 15. As students correct their answers, encourage them to raise any queries or concerns.

### Wrapping Up

- Revisit the tuning in activity. Ask the students to suggest any additional sentence endings and add these to the collection on the board.

## Differentiation

### Extending Students

- Provide any fast finishers with a copy of the
*Representing Tenths Worksheet*, to be completed independently.

### Supporting Students

- Allow students who are finding the review questions challenging to work in a small group with a teacher or teacher aide.

## Assessment Strategies

Suggested Assessment Strategies

- used strategic whole class or individual questioning
- observed student participation during learning activities
- recorded student progress on a checklist
- annotated student work samples
- collected and reviewed student work samples
- facilitated whole class or peer feedback sessions
- encouraged student self-reflection
- administered formal assessment tasks.

## Resources

#### Common Core State Standards alignment

Grade 4 > Standards for Mathematical Practice > Number & Operations - Fractions > Understand decimal notation for fractions, and compare decimal fractions > **CCSS.MATH.CONTENT.4.NF.C.6**

Use decimal notation for fractions with denominators 10 or 100. For example, rewrite 0.62 as 62/100; describe a length as 0.62 meters; locate 0.62 on a number line diagram.

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