##
* *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.

*High Quality Task: Making Connections*

# Review for MidTerm

Lesson 1 of 2

## Objective: Students will review key topics in Geometry curriculum including proofs with parallelograms and perpendicular bisectors.

#### Do Now

*10 min*

This Do Now reviews a critical topic in Geometry, finding the perpendicular bisectors of a line. To complete these problems, students must persevere through multiple steps (MP1) and also make use of structure (MP7). The steps to finding a perpendicular bisector for a line segment on the coordinate plane also review important topics like parallel and perpendicular lines as well as midpoint and writing equations of a line.

Teachers may also want to take this time to review how to construct a perpendicular bisector when given a line segment using a compass and straightedge.

#### Resources

*expand content*

With the remaining time, students can work on this set of Midterm Review problems, which include summary sheets with key facts, definitions and theorems for each unit. Students can start the review in class and then finish the rest for homework. I would suggest going over the review in-class if possible but I also usually post an answer sheet for students on our course website.

Typically, I hold a review session for my students between our class and the midterm where we specifically focus on questions for this unit. If you have time, in your curriculum, it may be worthwhile to spend an entire class allowing students to work on the review and then going over student-generated questions. Also, depending on how you teach the Geometry course, you may need to adjust the content included in this review packet.

#### Resources

*expand content*

*Responding to Timothy LeMere*

Thank you, Tim! Good luck with teaching, it's a wonderful profession! Please let me know if you see anything that I can make clearer or change - take care, and thank you again :)

| 2 years ago | Reply

Hi- Thanks a lot for letting me use this review for my students. I too am a new teacher and these allow me to organize my lessons and lets me know if I am on track. Thanks- Tim L.

| 2 years ago | Reply

Thank you Lisa, please let me know if I can help in any other ways!

| 2 years ago | Reply

Stephanie your materials are so helpful. As a new teacher, yet an older career switcher, I am overwhelmed.

Thank you so much for allowing other teachers to share your materials for free. I am learning from how you put your lessons together.

Thank you!!!!!

| 2 years ago | Reply*expand comments*

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- UNIT 1: Introduction to Geometry: Points, Lines, Planes, and Angles
- UNIT 2: Line-sanity!
- UNIT 3: Transformers and Transformations
- UNIT 4: Tremendous Triangles
- UNIT 5: Three Triangle Topics
- UNIT 6: Pretty Polygons
- UNIT 7: MidTerm Materials
- UNIT 8: Circles
- UNIT 9: 3-D Shapes and Volume
- UNIT 10: Sweet Similar Shapes
- UNIT 11: Trig Trickery
- UNIT 12: Finally Finals