EEE U111 · Narrated walkthrough · Module 2 §1.8, §2.1–2.3 · ladder step 1
Dependent sources: the one habit
What the diamond means, then the two-step habit that handles it in every equation: write it like an ordinary source, then add one equation for its controller. Shown on a three-element loop and a one-node circuit. Press play, keep the sound on, and answer the two questions it stops to ask you.
About three minutes, watch once (use ⏮ ⏭ to replay a scene). The narration stops to ask what the next move is. Commit to an answer before it continues: those pauses are the point, because they practise starting a question, not following one. Captions are on by default; the full transcript is below the player.
The same habit in writing: the dependent-sources section of the Module 2 lesson. Next rung: the test-source walkthrough.