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FACTREE gives you something interesting to discover every day — and something worth talking about together.
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Mathematics
Quick fact
A prime number p can be written as a sum of two squares if and only if p = 2 or p ≡ 1 (mod 4); no prime that is 3 mod 4 can ever be expressed that way.
Why this is interesting
You know that 25 = 16 + 9, so it's a sum of two squares. But why can't 6 be written that way? And is there a quick, foolproof way to tell which numbers can?
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Subjects · study & training · careers
Choose something you are considering. FACTREE will give you a clear picture of what it contains, how its main parts connect and where it could lead.
This private catalogue connects 31 subjects, study routes and careers across six broad areas. Public Maps and learner routes remain off.
Browse subjects
Open a subject to see its complete shape at a glance. You can always return here and choose something else.
See what programming involves, how its main areas connect, and whether you find the knowledge interesting enough to take it further.
Structuring the Programming Map…
Complete subject map
Move from the one-screen overview into all 19 areas. Open any area, compare possible Paths and return to the overview whenever you want.
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Curiosity quiz
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Administrator
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Knowledge architecture
This background view organises existing cards. It is separate from the authored lessons above.
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Curriculum coverage
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