1. Lesson Topic: From Nets to surface Area & Determining Surface Area of 3-Dimensional Figures Lesson Objective: I can…  I can use nets to determine the surface area of 3- Dimensional figures.  I can determine that a right rectangular prism has six faces: top & bottom, front & back, and two sides and determine that surface area is obtained by adding the areas of all the faces and develop the formula SA = 2lw + 2lh +2wh  Develop and apply the formula for the surface area of a cube as SA = 6s2

2. Looking Ahead…  Final Geometry Test Tomorrow – Study & Practice!!!  Come in for tutoring tomorrow morning

3. Surface Area is…  The area of all the faces added together, including the bases of a 3- Dimensional figure  Units squared

5. Example 1: boxes are 1cm x 1cm

6. Example 2: Calculate the surface area, boxes are 1ft x 1ft

7. Example 3: Draw a net, complete table, Calculate the surface area

8. Lesson summary  Now that we know the formula, we can use substitution to determine surface area without using a net

9. Lesson Summary, continued…  After all faces are made into polygons, what can you say about the arrangement of those polygons?  Describe the similarities between the nets of right rectangular prisms.  Describe the similarities between the nets of pyramids  How can you test your net to be sure that it is really a true net of the solid?

10. Evaluate Your Learning How will you “Sharpen Your Saw”?