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Warm-up

Warm-up. Pre-test. Perimeter, Area, Volume and Surface Area. Review of vocabulary and formulas. Objectives. Know the definitions of perimeter, area, volume and surface area Understand units, square units, and cubic units and how they relate to perimeter, area and volume

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Warm-up

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Presentation Transcript

  1. Warm-up • Pre-test

  2. Perimeter, Area, Volume and Surface Area Review of vocabulary and formulas

  3. Objectives • Know the definitions of perimeter, area, volume and surface area • Understand units, square units, and cubic units and how they relate to perimeter, area and volume • Use formulas to calculate perimeter, area, volume, and surface area

  4. Roll the Dice • Roll the dice and define the geometry vocabulary word next to your number.

  5. 11. Circle 12. Cube 13. Prism 14. Cone 15. Pyramid 16. Cylinder 17. Triangle 18. Trapezoid 19. Rectangle 20. Sphere Dice Roll Number Match • Area • 2. Circumference • 3. Perimeter • 4. Surface Area • 5. Volume • 6. Cubic Unit • 7. Square Unit • 8. Unit • 9. Radius • 10. Diameter

  6. Perimeter • Measure of the distance around a figure (polygon) made up of straight lines called sides (s, or l & w) • Square, triangle, rectangle, trapezoid, etc. or an irregular 2-D (flat) multi-sided shape.

  7. Circle Perimeter? • If the shape has curved lines instead of straight we call it Circumference. • Use radius (r)- distance from the center to the edge of the circle • diameter (d) – distance across the circle passing through the center • d = 2r or r = ½ d

  8. Units • Standard or metric • Measurement of the side or distance • Perimeter and circumference

  9. Square units • Area – measure of a shape’s (2-D Flat figures) surface, space inside the perimeter • Why do we call it “square”? ?

  10. Area • PSSA Formula Sheet • 2-D figures – Square, parallelogram, rectangle, triangle, trapezoid, circle, and regular & irregular polygons How do you find area of a figure that doesn’t have a formula?

  11. Check-up – Perimeter, Circumference and Area • Handout of examples • Lesson Practice: Perimeter, Circumference, & Area

  12. Calculating Surface Area • Some formulas – cube, rectangular prism, sphere, & cylinder • No Formula? • Find area of each face and add to find the total surface area

  13. What unit is used for Surface Area? • Area of each shape that makes up a 3-D solid • how much exposed area a solid object has • Answer: Square units

  14. Check-up – Surface Area • Handout of examples • Lesson Practice – Surface Area

  15. Cubic Units • Volume: how much three-dimensional (3-D) space a solid occupies • Why do we call it “Cubic”? ?

  16. Volume Formulas • PSSA Formula sheet • Prism, Cone, Pyramid, cylinder (many types), & sphere

  17. Check-up - Volume • Handout of examples • Lesson Practice - Volume

  18. More Practice – if you need it • Measuring Around • What happened when Orgo tore up a PUZZLE Book? • Surface Area of Rectangular Prisms • Comparing Volumes

  19. Ticket out the Door • Post-Test – same as Pre-test???

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