Independent courseware since 2013
Courses with the practice built in.
Contemplanda publishes online courses in mathematics, the natural sciences, history, and geography. Graded practice runs through the lessons, most of it with hints, and every course page here lists its full syllabus.
- Courses
- 21
- Lessons
- 1,273
- Practice items
- 13,543
- Practice formats
- 78
From the catalog
All 21 coursesAP Calculus
The full BC sequence, from limits and derivatives through integrals, differential equations, and series.
19 units · 131 lessons · 1114 practice items
View syllabus
AP Biology
From the chemistry of a single cell to the ecology of populations, with interactive genetics and data practice.
8 units · 54 lessons · 514 practice items
View syllabus
AP World History: Modern
The modern world from 1200 to today, tracing empires, exchange, revolutions, and global conflict.
14 units · 90 lessons · 918 practice items
View syllabus
How a course works
01
You work problems inside the lesson
Lessons interleave short readings and figures, in several courses video, with graded exercises. Answers are checked on the spot, while the idea is still fresh.
02
A course you can see all of
Every course is a map of named lessons grouped into units. A student can always point to the lesson they are on and see what remains.
03
Hints that never cost credit
Most exercises carry a ladder of hints, each more direct than the last, and opening one costs nothing. Only the top mastery level asks for a correct finish without them.
04
Answers you construct
Many exercises are answered by dragging points onto a graph, shading a region, arranging a proof, setting up a Punnett square, or filling an ICE table, with grading that understands the construction.
Already part of Contemplanda?
Students, families, teachers, and administrators sign in through Contemplanda Direct. Course authors and reviewers work in the studio.