Mathematics is the basis of all science and has come a long way since humans started counting. But when did people start doing math? The answer is complicated because abstract mathematics is thought to be different from counting — although counting is the foundation of math — and because many advanced types of mathematics, such as calculus, were developed only within the past few hundred years.
Humans couldn’t have mastered complex and abstract math without figuring out how to count first, and evidence suggests our species was counting tens of thousands of years ago.
The Ishango bone from Africa’s Congo region indicates that Homo sapiens have been making “tallies” — a kind of counting — for at least 20,000 years. The 4-inch-long (10 centimeters) bone, probably from a baboon or a bobcat, was found in the 1950s. Researchers think the dozens of parallel notches cut into its surface were a “tally” — a recorded count of some unknown item — and in 1970, archaeologist Alexander Marshack argued it was a six-month lunar calendar.
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