POTW – Putting it all together with triangles

Tough circle triangle proof problem.PNG

What this is: I am going to highlight problems I used with my honors geometry students that I thought were valuable. You can see all posts in this series here. I am taking no claim that these are necessarily original as I might have stolen them from many of you reading this!

How I used it: This was a review problem I gave in class.

What is it: This was a problem to practice and review proof skills.

Why I like it: This involves a few different ideas such as auxiliary segments and you can prove a couple different pairs of triangles. Their is also a couple different ways (as well as ways that would not work) so it was a great exercise for the learners to determine how much proof practice they needed. It made my top kids stop and think for a moment so that is always a good thing!

Let me know if you used this and how it went!

POTW – Fun Triangle Proof

Proof Problem.PNG

What this is: I am going to highlight problems I used with my honors geometry students that I thought were valuable. You can see all posts in this series here. I am taking no claim that these are necessarily original as I might have stolen them from many of you reading this!

How I used it: This was a problem on a quiz I gave.

What is it: This was how I tested to see if my kids could prove triangles congruent using more than one pair in your proof.

Why I like it: There are so many different ways to solve this problem so it made it quite interesting. Some saw other different pairs of triangles than others so it lead to some great discussion when I passed it back. Talking about how to prove isosceles and what is enough to show is also interesting to see what they think.

Let me know if you used this and how it went!

POTW – Intro To Tougher Triangle Proofs

Intro to proving two pairs of triangles congruent problem

What this is: I am going to highlight problems I used with my honors geometry students that I thought were valuable. You can see all posts in this series here. I am taking no claim that these are necessarily original as I might have stolen them from many of you reading this!

How I used it: I gave this after students finished a quiz to play with before we got back together as a class.

What is it: This was the very first dive into proving a pair of triangles congruent and then using them to prove another pair congruent.

Why I like it: The kiddos were able to complete this without anything from me! I like the way it is scaffolded to lead them to what I desire. This allowed us to jump into problems with much more difficulty (see my next post).

Let me know if you used this and how it went!