I usually use the last six week of the school year in geometry to teach circles: Arc lengths, chords, secants, tangents, etc. Which I have outlined in the Geometry Planning Guide The following school year students begin Algebra 2 and promptly forget these properties of circles. They also start the new school year frustrated and … Continue reading Going full circle completing the square

# Geometry

# Rolling Cups: Modeling in Geometry

The Rolling Cups task from the Shell Center is a perfect geometry modeling project. I use some form of this task every year for the last three days of the first semester as a final project. This task incorporates constructions, similarity, functions and modeling while pre-assessing students readiness for next semester's content: solids and circles. … Continue reading Rolling Cups: Modeling in Geometry

# Painless Proofs!

"I felt guilty for not including proofs in enough detail and I decided that this year I was going to teach it well. Here is what I did:"

# Constructions was MUCH better this year!

Last year I wrote a post about how I wanted to improve my teaching of geometric constructions this year. This year, I re-read it and used it to help plan this unit better. I never provided the students with steps to make constructions! It was tempting, but I resisted the urge, and they did great! Here … Continue reading Constructions was MUCH better this year!

# Sprinkler System Design

After determining how to write the equations of circles through the Shell Center activity: Equations of Circles 1, my students needed to practice using equations of circles. I decided to find my high school on Google Maps and make a screenshot. I then imported the screenshot into Desmos and adjusted the size of the image … Continue reading Sprinkler System Design

# Talking Points as End of School Survey

At the end of last school year I had students complete a survey to help me improve, but it took a long time and I think students just started clicking anything towards the end because it was the end of the school year and they were just done. This year, I decided to use talking … Continue reading Talking Points as End of School Survey

# I Cannot Think When Cheetos are Present

I wanted to make a quick post to remind my future self how the Mathalicious lesson Cheese that Goes Crunch went this school year & how I should adapt it for the future. The purpose of this activity is to have students develop a method to relate cheesiness to the non-cheesy portion of a crunchy … Continue reading I Cannot Think When Cheetos are Present