Track recap
Compact review built from the authored track order and the same local-first concept progress already saved in this browser.
Start with complex numbers as points on one plane, turn that plane into unit-circle and polar-coordinate geometry, deepen that same bench into trig identities and inverse-angle reasoning, then carry the coordinate language into motion traced from x(t) and y(t).
About recap mode
Keep the authored order, then open the extra explanation only when you need to understand how recap is choosing the next review move.
How it works
Recap mode does not invent a second curriculum. It keeps the existing starter-track order, then changes the prompt and suggested action with the current mastery and progress signals.
Keep using concept pages
Recap links only jump you to the most useful surface for a fast review. The simulation-first concept pages still carry the real teaching work and keep the guided path intact.
Recap steps
Focus badges and button targets come from the current mastery and progress signals. The next ready checkpoint still stays in the loop.
Complex Numbers on the Plane is still the next guided step in this authored order. No finished quick test, solved challenge, or completion mark is saved yet.
Start here before moving into Unit Circle / Sine and Cosine from Rotation.
This concept stays in the recap because it completes the authored track story, even if you have not reached it on this browser yet.
Builds on Complex Numbers on the Plane before setting up Polar Coordinates / Radius and Angle.
This concept stays in the recap because it completes the authored track story, even if you have not reached it on this browser yet.
Builds on Unit Circle / Sine and Cosine from Rotation before setting up Trig Identities from Unit-Circle Geometry.
This concept stays in the recap because it completes the authored track story, even if you have not reached it on this browser yet.
Builds on Polar Coordinates / Radius and Angle before setting up Inverse Trig / Angle from Ratio.
This concept stays in the recap because it completes the authored track story, even if you have not reached it on this browser yet.
Builds on Trig Identities from Unit-Circle Geometry before setting up Parametric Curves / Motion from Equations.
This concept stays in the recap because it completes the authored track story, even if you have not reached it on this browser yet.
Capstone step after Inverse Trig / Angle from Ratio.
