February 19 Triangular Prisms.notebook

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February 19, 2019

Tuesday , February 19, 2019 Warm Up

1.   If the points on the coordinate plane below are the three vertices of a rectangle, what are the coordinates of the fourth vertex?

2. What is the length of the rectangle above?

(2, -3)

(length is horizontal and width is vertical)

3. What is the width of the rectangle above?

length = 6 units width = 5 units

February 19 Triangular Prisms.notebook

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February 19, 2019

SWBAT to find the surface area of 3D figures made up of rectangles and triangles by drawing using nets or formulas. 

LEQ: What strategies can help me find the surface area of a triangular prisms, and pyramids?

6.G.4 NC.6.G.4 Represent right prisms and right

pyramids using nets made up of rectangles and triangles, and use the nets to find the surface

area of these figures. Apply these techniques in the context of solving real-

world and mathematical problems.

February 19 Triangular Prisms.notebook

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February 19, 2019

Review

Using your notes, turn and talk about the following things:• What is surface area?• What strategies can help find the surface area?

February 19 Triangular Prisms.notebook

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February 19, 2019

February 19 Triangular Prisms.notebook

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February 19, 2019

Triangular Prisms

Note: Surface area is finding the area of all shapes then adding them.

What shapes are in the net? What are the area formulas for triangles and rectangles?

What is the surface area?

6 cm

7 cm

5.2 cm

Teacher Input

Remember: It may help to draw out all of the shapes to help find the areas.

Page 775

1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?

February 19 Triangular Prisms.notebook

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February 19, 2019

Pyramids

Square/ Rectangular­Based Pyramid

Remember: It may help to draw out all of the shapes to help find the areas.

Page 783

Page 784

Teacher Input1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?

February 19 Triangular Prisms.notebook

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February 19, 2019

Teacher InputTriangular­ Based Pyramid

Remember: It may help to draw out all of the shapes to help find the areas.

1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?

February 19 Triangular Prisms.notebook

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February 19, 2019

1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?

Teacher Modeling

1)

2)

Find the surface are of the triangular prism.

February 19 Triangular Prisms.notebook

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February 19, 2019

Collab. Practice

2)

1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?

537 ft 2

February 19 Triangular Prisms.notebook

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February 19, 2019

Your goal is 5-6 problems before time to go. However, if you finish 5 early, continue working until time is up.

Indep. Practice

Today you will begin to work with your group on task cards for surface area. We will continue this for practice through tomorrow. You must show all work by setting up the problems before using the calculator.

1‐ What shapes are in the net?

2‐ What are the measurements of all the sides.

3‐ What is the area for each shape?

4‐ How do you find the total surface area?