Statistics, modelling and technology on real data, at Standard and Higher Level. 78 lessons: 39 for SL, and 39 more for HL. 30 of them are taught in both courses, so AA and AI together have 135 different lessons.
Showing the HL course: all 78 lessons, with the 39 HL lessons marked.
The first lesson of every topic is free. The IB Diploma plan opens every other lesson, in both courses and both levels, so a change of course or level never locks you out, and every lesson from Year 7 for the refreshers. $99 for 12 months or $149 for 2 years, for the whole family.
One payment. Nothing renews. Full refund within 30 days. Prices are in US$; Gumroad shows your local currency at checkout. Already paid? Open any lesson and type the email you paid with.
8 SL lessons, plus 7 HL. Topic page
6 SL lessons, plus 4 HL. Topic page
6 SL lessons, plus 10 HL. Topic page
11 SL lessons, plus 8 HL. Topic page
8 SL lessons, plus 10 HL. Topic page
Every lesson on this site has a teacher page beside it: worked answers, what each common wrong answer tells you about a student's thinking, and questions at three levels for the board. The first lesson of every unit is free for students; a plan opens the rest.
