Lesson 01
The Size of Angles
Reason about angle size as a turn, independent of ray length.
Open lesson →Chapter 15: Angles
5 lessons · 1 consolidation units · chapter review and exam
Internally reviewed instructional baseline. External educator/learner testing, human scoring of student constructions, and live-host verification remain pending.
Instructional lessons
Lesson 02
Measuring Angles
Measure angle magnitudes using correct protractor scale and alignment.
Open lesson →Lesson 03
Drawing Angles
Construct labeled angles of stated measures with a protractor.
Open lesson →Lesson 04
Adding and Subtracting Angles
Find missing adjacent angles from sums/differences and straight/full turns.
Open lesson →Lesson 05
Reflex Angles
Identify and compute reflex angles using full-turn relationships.
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