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Exploring Surface Area of 3-D Shapes: Nets and Figures

Learn how to classify shapes, find surface area, and use nets to create three-dimensional figures in this interactive exploration activity. Practice with a worksheet and hands-on tasks.

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Exploring Surface Area of 3-D Shapes: Nets and Figures

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  1. Bell Work 1. Classify the shape of a soup can as a three-dimensional figure. Cylinder 2. Classify the following shape using two three-dimensional figures. Rectangular Prism 2. Triangular Prism

  2. Surface Area Using Nets

  3. Definition • Surface Area – is the total number of square units used to cover a 3-D surface. • Surface area is found by finding the area of all the sides and then adding those answers up.

  4. Nets • A net is all the surfaces of a solid laid out flat. • A two-dimensional pattern that can be folded to form a three-dimensional figure. Back Top Right Side Left Side Top Right Side Front Front Bottom

  5. Exploration Activity • YOU WILL NEED: • Handout 2. 2 solids: Rectangular Prism and Triangular Prism 3. Practice- Surface Area Worksheet (When we are done with #1 and #2)

  6. 1. Answer Questions 1-3 on your worksheet. • Cut around the outside of each net. • Fold to make a three dimensional figure • Follow Steps 1-3 on your worksheet with Miss Schrader to find the surface area of each of your cut out figures. • Try to answer questions 4 and 5 on your own. We will discuss these answers on Friday. • Answer questions 6 and 7 on your own. • Turn it into your periods box where you usually turn in your assessment. • Work on your practice.

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