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Missing angles in a triangle leads us to the angle sum theorem which states that there are 180˚ in every triangle.  Really???  In EVERY triangle? How is this possible??  There are a lot of theorems in geometry that we TRY to prove to students, but perhaps it's difficult for everyone to make the connection.  The angle sum theorem in triangles though is a theorem that has a low floor and should allow more students to really internalize the idea.

Here are a few ideas for "proving" to students that there are 180˚ in the interior angles of EVERY triangle.
Who doesn't love a good mystery?  But, in math class - let's face it, our students need to practice! So, I have developed an entire ...
I tried making a new type of crossword puzzle this week - it's great for fast finishers or a brain break.  Perfect for having students p...
Coming to you quickly today to let you know I have a freebie available if you sign up for my email list! I designed this one to use around V...
Now that my classes are consistently back in person and all students are present, I am creating quick activities for my class to use to prac...
I am always looking for fun ways to motivate my students.  Recently I came across scratch off stickers on amazon...who knew these were a thi...
I have been so busy with my own classes and elearning, I haven't been able to do anything with my blog!  But, we had so much fun in clas...