- A sequence for productive thinking with the idea of energy
- Starting in the right frame of mind
- Three levels of description
- A critical test
- A tool to think with
- 4 steps
- Principles
- Preparing the ground for thinking with energy
- Stores and Pathways — representations to learn with
- Not the go of things
- Thinking with constraints
- Possibilities and impossibilities
- Trade-offs
- In classrooms
- Real examples
- On choosing a selection of stores
- A parting shot
- Four supported patterns of reasoning

- Making models
- Climate change
- Constraint relationships
- Accumulation
- Feedback
- Modelling—the beating heart of physics
- A choice in how you approach modelling
- Choosing and using representations
- Modeling is a process for which you have to choose tools
- Some issues and a question
- Accumulating or constraining
- A workable classroom taxonomy
- A recap-accumulating for describing processes
- A recap – Constraining for considering state to state
- Representing foundational thinking in pdl
- Modeling for communicating physics

- Representing kinematics
- An easy start…
- A sequence
- Real stories of motion
- Recording and generating journeys
- Accumulations change displacement
- Accumulations and tracks
- Changing velocity
- To one dimension
- Algebra, at last
- And finally, graphs
- Why two dimensions?
- Taking a point of view
- Arrows as a primary representation
- Motion sensors and measures
- On designing a sequence
- Significant teaching and learning challenges
- Are graphs and algebra central?
- Concluding

- Photons - a sequence, thought through
- A future...
- Seeing
- Engineered spaces around the source
- Guiding photons
- A model to predict where photons will turn up
- Summary so far.
- A general tool
- Reflection
- Refraction
- Propagation
- Restricted paths for propagation
- Just two slits
- Engineering a lens
- Engineering a mirror
- Why bother, and what about...
- Photons, power, compensation
- Photons, devices, power, fractional absorbtion
- Photons and selective absorption
- Threshold effects
- Gifts from photons

- Figuring out how to think about space and time
- Light cones for reasoning about space and time
- Valuing invariance
- Introducing light cones
- Thinking with light cones
- Reliable ticking clocks
- Clocks ticking at different rates
- What does not change
- Figuring out what speeding others see
- Seeing as the higher-ups see
- Geometry of space with cones
- Predicting paths