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by Gooblebrai 502 days ago
Khan Academy until Calculus is perfect to recover the foundations
2 comments
idontwantthis 502 days ago
Seconded. 10 hours per week with my stepson brought him up about 5 years in less than 6 months. Consistency is key (same as everything).
link
HenryBemis 502 days ago
https://www.khanacademy.org/math/
link