warm-up pre-test. perimeter, area, volume and surface area review of vocabulary and formulas
TRANSCRIPT
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Warm-up
Pre-test
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Perimeter, Area, Volume and Surface Area
Review of vocabulary and formulas
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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
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Roll the Dice
Roll the dice and define the geometry vocabulary word next to your number.
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Dice Roll Number Match11. Circle12. Cube13. Prism14. Cone15. Pyramid16. Cylinder17. Triangle18. Trapezoid19. Rectangle20. Sphere
1. Area2. Circumference3. Perimeter4. Surface Area5. Volume6. Cubic Unit7. Square Unit8. Unit9. Radius 10. Diameter
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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.
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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
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Units
Standard or metric Measurement of the side or distance Perimeter and circumference
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Square units
Area – measure of a shape’s (2-D Flat figures) surface, space inside the perimeter
Why do we call it “square”? ?
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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?
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Check-up – Perimeter, Circumference and Area
Handout of examples Lesson Practice: Perimeter,
Circumference, & Area
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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
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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
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Check-up – Surface Area
Handout of examples Lesson Practice – Surface Area
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Cubic Units
Volume: how much three-dimensional (3-D) space a solid occupies
Why do we call it “Cubic”?
?
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Volume Formulas
PSSA Formula sheet Prism, Cone, Pyramid, cylinder (many
types), & sphere
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Check-up - Volume
Handout of examples Lesson Practice - Volume
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More Practice – if you need it
Measuring Around What happened when Orgo tore up a
PUZZLE Book? Surface Area of Rectangular Prisms Comparing Volumes
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Ticket out the Door
Post-Test – same as Pre-test???