Shifts, graphed
Circle a problem with the Magic pen and ask for a graph. The curves are drawn by hand, both equilibria marked.
Elasticity, worked through
Write “work it out” beside a problem. Every step is written out in handwriting, down to the answer.
Cost curves by voice
Hold Talk and ask for MC, AVC and ATC. They’re drawn under the problem, with MC meeting ATC at its lowest.
Games, solved
Circle a payoff matrix and ask for the equilibrium. Each best reply is worked out and the answer boxed.
