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. 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
11. Circle
12. Cube
13. Prism
14. Cone
15. Pyramid
16. Cylinder
17. Triangle
18. Trapezoid
19. Rectangle
20. Sphere

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. How do you find area of a figure that doesn’t have a formula?
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???