Choose a focused lesson or revisit the full unit sessions below.
Wednesday, October 21 · Quiz 8 and solids lesson
Cylinder Volume and Surface Area · Wednesday, October 21
Administer Quiz 8 first (15 minutes; decimal degrees to DMS only), then teach this 30-minute introduction to cylinder solids.
Open featured lesson
Session 1
Area and Circle Geometry
Area decomposition, circle measures, arcs, sectors, and angle theorems
55 minutes · 22 slides
- decompose figures and compute area accurately
- use circle terminology and circumference-area formulas
- apply central-angle, inscribed-angle, chord, and arc relationships
Open session 1Session 2
Radians, Velocity, and Solid Geometry
Angle conversion, arc length, sectors, motion, volume, and surface area
55 minutes · 22 slides
- convert angle measures and compute arc length and sector area
- relate angular velocity, linear velocity, and distance
- select cylinder volume and surface-area formulas and find hollow-cylinder material volume
Open session 2Session 3
Circle, Radian, and Speed Review · Monday, October 19
A past 55-minute Unit 2D review of circle diagrams, angle conversions, arcs, sectors, and rotational speed.
55 minutes · 31 slides
- Read circle diagrams and connect central angles, inscribed angles, and arcs
- Convert DMS, decimal degrees, and radians with the requested precision
- Find arc length and sector area, then solve backwards for radius or angle
- Convert rpm to angular and linear speed using the radius
Open session 3