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# Finding the Surface Area of Pyramids Using Nets

Lesson 24 of 37

## Objective: SWBAT determine the surface area of pyramids using nets

*55 minutes*

#### Lesson Middle

*30 min*

I will first model how to measure the area of a triangle using a ruler. Here is an opportunity for students to get more practice using an appropriate tool (**MP5**); it is also an opportunity for me to practice patience. My more active students will think the rulers are drum sticks or swords! Measuring the base and height of a triangle using a ruler requires students to attend to precision (**MP6**). Students will not only have to make decisions about how precise to measure each dimension, but students must be aware that the base and the height are perpendicular to each other. I will NOT ask students to use protractors to make sure they have a 90 degree angle, but I’ll expect them to estimate well. When the height of a triangle is not one of its sides, I’ll expect to see dotted lines denoting the height. I would like to have some good examples to display so I’ll ask my students to write neatly. This is a do as I say not as I do moment, since my handwriting can sometimes be less than ideal! For each shape that we measure, I’ll set a time limit of a few minutes. To hone in on the idea of surface area being a measurement of unit squares, for each shape I will ask students to tell me how many squares of a relevant unit will cover the face of the shape. This may seem obvious, the answer is the surface area, but I like to make sure my students understand what the unit of measurement is.

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#### Lesson End

*10 min*

Students will be asked to find the surface area of a square pyramid using its net and a ruler. If time permits, we will discuss solutions to the exit ticket.

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- LESSON 1: Explore Perimeter and Area of Composite Shapes
- LESSON 2: Perimeter of Irregular Rectilinear Shapes
- LESSON 3: Area of Composite Shapes Using a Grid
- LESSON 4: Area of Composite Shapes
- LESSON 5: Area of Regions Formed by Inscribed Shapes
- LESSON 6: CORNERSTONE:Circle Ratios: Diameter to Radius; Circumference to Diameter
- LESSON 7: CORNERSTONE: Circumference Formula
- LESSON 8: Area of a Circle
- LESSON 9: Circumference & Area Fluency Practice
- LESSON 10: Finding the Radius From a Given Circumference or Area
- LESSON 11: Circumference from Area / Area from Circumference
- LESSON 12: Circle Designs: Finding the Area and Perimeter of Shapes Composed of Arcs and Line Segments
- LESSON 13: Assessment_Area and Perimeter (Circumference) of Composite Shapes and Circles
- LESSON 14: Drawing Prisms & Pyramids
- LESSON 15: Describe Prisms and Pyramids Using Algebra
- LESSON 16: Using Nets to Find the Surface Area of Prisms
- LESSON 17: Using a Formula to Find the Surface Area of Prisms
- LESSON 18: Finding the surface area of triangular prisms using a net
- LESSON 19: Finding the Surface Area of a Triangular Prism Using A Formula
- LESSON 20: Discovering the Formula for the Surface Area of A Cylinder
- LESSON 21: Finding the Surface Area of Cylinders Using a Formula
- LESSON 22: Practice Day: Surface Area of Prisms & Cylinders
- LESSON 23: Surface Area of Prisms and Cylinders Assessment
- LESSON 24: Finding the Surface Area of Pyramids Using Nets
- LESSON 25: Finding the Surface Area of Pyramids Using a Formula
- LESSON 26: Surface Area of Composite Shapes
- LESSON 27: Surface Area of Composite Shapes With Holes
- LESSON 28: Surface Area Assessment
- LESSON 29: 3-D Models from 2-D Views
- LESSON 30: Exploring Volume and Surface Area with Unifix Cubes
- LESSON 31: Explore Volume of Rectangular Prisms
- LESSON 32: Find the Volume of Prisms Using a Formula
- LESSON 33: Volume Of Cylinders Using a Formula
- LESSON 34: Volume of Composite Shapes
- LESSON 35: Volume and Surface Area - Accelerated Math Fluency Day
- LESSON 36: Volume of Pyramids
- LESSON 37: Surface Area and Volume Final Assessment