Reflection: Checks for Understanding Proofs about Angles - Section 1: Do Now


At the end of the Do Now, we went over the quiz. I had the students grade their own work and then asked  students to hold up their fingers with the number of questions they got correct.

I did this quick formative check even though I collected sheets to look at the results detail. With the visual check, during the lesson I was able to have a conference with the students who didn't do as well on the quiz about what they needed to better understand the postulates. 

  Proofs about Angles
  Checks for Understanding: Proofs about Angles
Loading resource...

Proofs about Angles

Unit 6: Introduction to Geometric Proofs
Lesson 7 of 10

Objective: SWBAT write simple formal proofs involving angle pairs

Big Idea: Students will apply postulates to write two column proofs using vertical angles, complementary angles and supplementary angles.

  Print Lesson
9 teachers like this lesson
Math, Proofs, Geometry, vertical angles, logic
  45 minutes
angles image
Similar Lessons
Reasoning About Rigid Motions
Geometry » Congruence and Rigid Motions
Big Idea: Students learn how to use reason as well as experience to understand the result of transforming a figure. Deductive and inductive logic work hand-in-hand!
Ault, CO
Environment: Rural
Tom Chandler
Proving It
Geometry » Line-sanity!
Big Idea: This lesson begins to builds students understanding of proofs using Algebra and Geometry.
Saratoga Springs, NY
Environment: Suburban
Stephanie Conklin
Parallel Lines Challenge Problem
8th Grade Math » Transformations
Big Idea: Challenge students to prove what they know about parallel lines and angle relationships when the diagram is unique and exact angle measures irrelevant.
Bowling Green, KY
Environment: Suburban
Christa  Lemily
Something went wrong. See details for more info
Nothing to upload