1st/2nd Honors Geometry Skinny

What

1st/2nd Honors Geometry Skinny

When

4/5/2023

Standards Addressed:
MGSE.9-12.G.GMD.1 Give informal arguments for geometric formulas.
a) Give informal arguments for the formulas of the circumference of a circle and the area of a circle using dissection arguments and informal limit arguments.

MGSE.9-12.G.C.5 Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

Learning Targets /Success Criteria:
LT: I can calculate arc length and area of a sector for circles.
SC:
• I can identify the angle measure (degrees) for the sector or arc using arc and angle theorems.
• I can use the appropriate formula to solve for arc length or area of the sector given the problem.
• I can solve real world problems involving arc length and area of sectors.

Introduction/Connection (Activator): TBD.
Direct Instruction/Guided Practice:
--guide students in completing arc length and area of sector problems on Area, circumference and arc length w/s (attached below).

Independent practice/Differentiation/Collaboration:
--Differentiation: Graphic organizers, foldables, color coding lines/segments, one-on-one assistance for struggling students, accelerated practice for higher performing students, partner work, student-led teaching/review.
--if time, students will work on arc length and sector more practice w/s (attached below).

Summarizer/CFU: TOTD

Assignment: Complete #1-3 (find arc length & sector area: write in terms of pi & rounded to 2 places) & #10-13 on back of Arc length and area w/s more practice (attached below).