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mathematical working space (2) |
ιστορία των μαθηματικών (2) |
μαθηματικός χώρος εργασίας (2) |
arithmetic-algebraic working space (1) |
collaborative teaching model (1) |
geogebra (1) |
history of mathematics (1) |
mathematics history (1) |
polygonal numbers (1) |
αριθμητικό-αλγεβρικός χώρος εργασίας (1) |