## Reflection: High Quality Task Review for MidTerm - Section 1: Do Now

In today's Do Now, students found the perpendicular bisector in two ways: algebraically and as a construction on a coordinate plane.  Once we had plotted the points, we constructed the perpendicular bisector and then reviewed how we could use the y-intercept and possibly x-intercept (along with the slope) to write an equation of this line.  It really was an "Ah-Ha" moment for many of students, once they realized that we could graphically and algebraically find the same equation using different methods, particularly with one of them being a construction method.

This student example, Perpendicular Bisector Example, shows how I extended this Do Now to challenge students and also help them make connections with prior knowledge.  If you plan on extending this activity, make sure to have graph paper handy and also you may want to ask a student or pair of students to lead the entire class through a general review of constructing perpendicular bisectors.  For example, you could draw a line on the chalkboard and then ask a student volunteer(s) to come up and show how to create a perpendicular bisector using a protractor and straight-edge.  Then, you can direct students to construct a perpendicular bisector for the line LM like in this example.

# Review for MidTerm

Unit 7: MidTerm Materials
Lesson 1 of 2

## Big Idea: Around the world time! Students will travel around the classroom to review and then present their review questions to each other for review!

Print Lesson
1 teacher likes this lesson
Standards:
Subject(s):
Math, Geometry, Proofs, Geometry
80 minutes

### Stephanie Conklin

##### Similar Lessons

###### Graphing Parallel and Perpendicular Lines (Day 1 of 2)
Algebra I » Graphing Linear Functions
Big Idea: Through graphing students will deduce that the slopes of parallel lines are the same and the slopes of perpendicular lines are opposite reciprocals.
Favorites(21)
Resources(16)
Washington, DC
Environment: Urban

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!
Favorites(1)
Resources(18)
Ault, CO
Environment: Rural