# Math - 3D shapes and nets

Rationale of the lesson:
a. Lesson Information
What CAPS subject are you teaching?
Mathematics
What is the topic of this lesson?
Geometry of 3D objects
What is the CAPS specific focus?
Building a 3D model:
Revise using nets to create models of geometric solids, including cubes and prisms

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Slide 1: Slide
MathPrimary EducationAge 13

This lesson contains 23 slides, with interactive quizzes, text slides and 1 video.

## Items in this lesson

Rationale of the lesson:
a. Lesson Information
What CAPS subject are you teaching?
Mathematics
What is the topic of this lesson?
Geometry of 3D objects
What is the CAPS specific focus?
Building a 3D model:
Revise using nets to create models of geometric solids, including cubes and prisms

#### Slide 1 -Slide

Rationale of the lesson:
What are the lesson objectives (for the full lesson plan)?
By the end of this lesson learners will be able to:
- Recognize the nets of different 3D shapes,
- Use and construct nets according to the properties of all 3D shapes.

#### Slide 2 -Slide

Rationale of the lesson:
Provide a summary of the content covered.
In this lesson, learners will first grasp the fundamental concept of nets and their practical applications. Through an interactive quiz, it will test their knowledge, challenging themselves to match nets with corresponding 3D shapes, name different nets, and identify the nets suitable for specific 3D shapes. Following this, the lesson introduces the intriguing world of constructing nets based on the number and shape of faces in 3D solids, aided by a succinct how-to video. The practical application phase invites learners to immerse themselves in a creative project: the design of two-story houses using a variety of 3D shapes. They will learn to draw nets for these shapes and comprehend the significance of counting faces, edges, and vertices. Collaborative group work will be central as learners sketch, construct, and present their unique two-story houses, explaining their net construction process and showcasing their understanding of the 3D shapes employed. The lesson concludes with group presentations and a worksheet to assess learners’ comprehension and ability to apply their newfound knowledge.

#### Slide 3 -Slide

Rationale of the lesson:
b. How does the 15-minute slice that you are teaching online fit into this lesson?
What comes before the part of the lesson you will microteach?
I will focus on the introduction phase of the lesson, so nothing will come before the lesson.
What comes after the part of the lesson you will microteach?
After the introduction, the teaching and learning phase will follow where I will explain and show how to draw different nets.            The learners will be divided into groups where they will draw and build their nets to make a 3D model.

#### Slide 4 -Slide

Rationale of the lesson:
Why have your chosen to teach this slice of the lesson?
I have chosen this part of the lesson because it highlights one of my objectives for the lesson and it is fun and engaging and          every learner can take part in the lesson.
c. How have you adapted this slice of your lesson for online teaching?
What digital tools have you used to support online teaching?
I used Lesson up, where you can make and import presentations, make quizzes, use mind maps, attach videos and multiple            interactive slide add on’s. This is a great tool to use for online lessons. I used YouTube as well.

#### Slide 5 -Slide

Rationale of the lesson:
How will you engage your learners in this lesson online?
I will engage my learners with the use of interactive slides, games and videos.

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#### Slide 12 -Drag question

Which of the following nets will not make a cube?
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A
B
C
D

#### Slide 13 -Quiz

Which of the following nets will not make a rectangular prism?
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A
B
C
D

#### Slide 14 -Quiz

4. Match the name to the correct nets:
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Hexagonal prism
Hexagonal Pyramid
Square based pyramid
Sphere
Triangular prism
Cylinder

#### Slide 15 -Drag question

How many faces does a Hexagonal Prism have?
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A
5
B
8
C
7
D
9

#### Slide 16 -Quiz

How many edges does a triangular-based pyramid have?
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A
3
B
9
C
6
D
4

#### Slide 17 -Quiz

How many vertices does a cube have?
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A
8
B
6
C
12
D
9

#### Slide 18 -Quiz

Look at the following 3D shape and name the number of faces, vertices, and edges.
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A
4,7,5
B
5, 9, 6
C
5,6,9
D
6,7,9

#### Slide 19 -Quiz

Topic for Today:

Drawing nets based on your knowledge of the 3D shapes and their number of faces, edges and vertices.

#### Slide 20 -Slide

Look at the following video: