In the development of Physics 131, we have been working backwards: refining the course starting with the last unit on entropy and then moving towards the start of the semester. Due to this approach, our first two units on the mathematical foundations of physics and forces are now our weakest two units. Moreover, Unit 3 – Forces and… covers a LOT of material: impulse, work, and torque. One of our (many!) goals for the summer is then to revamp these first two units – hopefully making the labs a more valuable experience at the same time. One of the big guiding principles of this revamp is to use the idea of expansive framing described in Engle et al .