Grade 10

A variable learns to hold many values at once, and then to hold them under names of your choosing. Programs stop forgetting everything the moment they finish, and start saving what they know into files and reading it back. A spreadsheet learns to count and add only the rows that pass a test, and to look one table's answers up in another. Then the two things the whole subject has been circling — how a page actually reaches you, and how a hundred thousand records are kept so that any one of them can be found — get a term each of their own.

5 units · 12 skills

Building words from their parts and agreement across a whole passage, reading a passage closely, editing and proofreading, and writing a summary or an analytical paragraph.

3 units · 6 skills

Real numbers, triangles proved identical or similar, trigonometry put to work on heights and distances, coordinate geometry, circles and tangents, and composite solids.

6 units · 9 skills

Balancing an equation and ranking metals by how readily they react, carbon's covalent habit and the series it builds, the life processes of the human body and the plant, control by nerve and by hormone, the rules of heredity, the human eye, and the two effects of an electric current.

7 units · 10 skills