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Published byCecil Walsh Modified over 7 years ago
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Math CC7/8 – Feb. 10 Math Notebook: Things Needed Today (TNT):
Pencil/Math Notebook/Calculator/Book New Unit: Filling & Wrapping Math Notebook: Topic: Finding Volume & Surface Area HW: F&W p. 15, #1-2, 12-13, 17-19, 31
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What’s Happening Today?
Warm Up New Unit- Filling & Wrapping Lesson (Finding Volume & Surface Area) Begin HW?
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Warm Up To test your understanding of volume and surface area, consider the following… 32 cm x 16 cm x 8 cm SA = 2(896) sq. cm = 1792 sq. cm Vol = 4,096 cubic cm
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Things to Know! Many packaging involves rectangular prisms.
It is helpful to know the properties of rectangular prisms We will learn about the MOST important properties of rectangular prisms Learning about the properties will help you DEVELOP strategies for working with nonrectangular prism.
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How do you calculate the surface area & volume of a rectangular prism?
Question How do you calculate the surface area & volume of a rectangular prism?
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pg. 7 Add to notes
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pg. 8
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pg. 8
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pg. 9
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4. Length and/or Diagonals 5. Length and/or Diagonals
pg. 9 Surface Area 2. Length, Width, & Height 3. Volume 4. Length and/or Diagonals 5. Length and/or Diagonals
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Multiply the length by the width and again by the height
pg. 9 Multiply the length by the width Multiply the length by the width and again by the height
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pg. 9 Vol = L x W x H Vol = 10 x 15 x 8 Vol = 1,200 containers
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Vol = Multiply the all three dimensions – L x W x H
pg. 10 SA = 2 ( ) SA = 130 square units SA = 2 ( ) SA = 76 square units SA = 2 ( ) SA = 58 square units V = 4 x 5 x 5 V = 100cubic units V = 4 x 5 x 2 V = 40 cubic units V = 4 x 5 x 1 V = 20 cubic units SA – Find the area of the front, top and side. Then add them together and multiply by 2 to find the SA for all six faces. Vol = Multiply the all three dimensions – L x W x H
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Homework: F&W pg. 15 #1-2, pg. 19 #12-13 pg. 20 #17-19 pg. 24 #31
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