- Nathan Belcher

# Organization of Models in AP Physics C: Mechanics

One of the most challengingâ€”yet rewardingâ€”aspects of teaching is reviewing a course to make improvements for the following year. This process requires an honest assessment of your teaching ideas and practices, which can feel like a personal attack; however, it is important to push through the negative feelings about your teaching ideas and practices to fully examine their impact on students.

During my three years of teaching AP Physics C: Mechanics, I have performed an analysis of my teaching ideas and practices each year. Last year, I made a significant shift to the order of topics; instead of focusing on linear models and repeating the information with rotational models, I interleaved linear and rotational models. Before the shift, students were overwhelmed with the rotational models due to the competing cognitive demands of the mathematics and physics. After the shift, students were much more comfortable with the rotational models because they were able to compare and contrast the linear and rotational models and slowly work through the new mathematics and physics. This year, I am continuing to interleave the linear and rotational modelsâ€”the feedback from students has been positive so far!

Here is a list of the order of models for AP Physics C: Mechanics:

Linear Constant Velocity

Angular Constant Velocity

Linear Uniform Acceleration

Angular Uniform Acceleration

2-D Motion

Linear Momentum

Angular Momentum

Balanced Force

Unbalanced Force

Balanced Torque

Unbalanced Torque

Energy, Work, Power (Including rotational energy)

Oscillations

Gravitation

Please use the comments if you would like to add any ideas or ask questions; I greatly enjoy discussing the teaching and learning of physics.