Companion resource
A preflight checklist for online mathematics.
This is a site-original companion resource drawn from recurring problems addressed across both editions. It is not a substitute for the chapters; it is the list you run before students discover the problem for you.
f(x)
Mathematical communication
↔
Interaction
Σ
Assessment
Δ
Technology
ε
Access and anxiety
∫
Course structure
Design principle: if a technological choice makes the mathematics harder to see, discuss, or assess, the technology has become part of the problem.