Free for high school Geometry teachers
Get a full Geometry proofs lesson. Free.
We'll email you Lesson 4.05, Congruent Triangle Proofs, Day 1.
You'll get the same lesson members get: the teacher overview, guided notes, a practice activity and fully worked answer keys. 13 pages,Ā available as a PDF or editable PowerPoint.
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What teachers ask before they sign up
Is it really free?
Yes. The lesson is free and no credit card is needed. If you like it, the other 91 lessons are in the membership. If you don't, keep it anyway.
Will it fit my students?
It is built for high school Geometry. Students complete two-column proofs proving that triangles are congruent using SSS, SAS, ASA, AAS and HL with midpoints, bisectors, vertical angles, and alternate interior angles. Want to change a problem for your students? The editable PowerPoint for this lesson comes in the same email.
How much work is it on my end?
Just open and teach. The teacher overview lists the standards covered, the SWBAT, and suggestions on how to teach it. If you want to edit a problem, simply make the change on the PowerPoint.
What teachers say
From teachers who have used this lesson in their classrooms.
“This was an excellent resource for my students to use when we went through proofs. It fueled productive discourse and students were able to problem solve with one another.”
Kolbie L
“I love the ease of readability of all of [the] resources, they are all thoughtfully laid out and easy to implement.”
Veronica H