Tools · 8 min read
Free calculus tools: a tour by the job you need done
Sixteen tools that cost nothing to use, grouped by the job — graph it, check an answer, practise it, have it explained again. One sourced line each, and nothing ranked.
For calculus teachers
Calculus, kept current.
Articles, resources and exam changes that matter to high-school calculus teachers — short, sourced, and safe to act on.
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Practice · 6 min read
Handwritten FRQs in a digital world
The questions are viewed in Bluebook; the free-response answers are handwritten in a paper booklet and posted off to be scored. What College Board publishes about the hybrid digital exam, and the habits that follow.
Pedagogy · 6 min read
Five calculus ideas students keep mixing up
A limit is not the value of the function, continuous is not differentiable, the Mean Value Theorem is not Rolle’s — five distinctions the shorthand drops, each with a citable source and a one-sentence fix.
New teachers · 5 min read
Teaching AP Calculus for the first time: the two-minute guide
The CED, the six steps College Board itself recommends, and where the free material lives — the short route through a first year of AP Calculus.
Who's Who in calculus
The people behind the ideas
Historic and current figures — what they contributed, and why it still lands in a classroom today. Twenty profiles are live, from Newton and Leibniz through Cauchy and Weierstrass to Euler, Gauss and Kovalevskaya — plus the first living entries, from open courseware to a complete free set of class notes.
Resource library
Curated, and kept current
Free and paid resources for calculus teaching — every link checked and kept current, dead ones weeded out. Thirty entries are live; free ones come first, and anything paid is labelled.
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