History of math: Sumerian multiplication table (2700 BC) Cuneiform multiplication table Once people in West Asia figured out how to write down numbers, about 3500 BC, they quickly began to want to use cuneiform to [...]
Tangents: This line is tangent to a circle. What is a tangent? A tangent, like a sine or a cosine, is a mathematical way of thinking about a kind of movement that happens [...]
Right triangle and cosine What is a cosine? A cosine, like a sine, is a mathematical way of thinking about a kind of movement that happens in nature. A cosine is [...]
History of Math: Counting tokens from Mehrgarh in Late Stone Age India Indian counting tokens and base 10 The first Indian numbers appeared in the late Stone Age, about 4000 BC. Around this time, [...]
Antikythera mechanism: a clockwork machine to calculate how the earth and the sun move around When did Hipparchus live? Hipparchus was a Greek astronomer and mathematician in the 100s BC, in the time [...]
