Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**Tom_Brooke**- Replies: 1

All these years, I found so much resource online and I found that a few of them are really useful. However, I think most people have heard of these sites such as Khan Academy, StudyPug and edx. Anyone has other suggestions?

197,109

its cool but just a bit confusing at first.

try learning it in khanacademy

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