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Information on previous ESUs
This is a page from a manuscript of the Algebra (Maqalah fi al-jabra wa-al muqabalah) of Omar Khayyam (1048-1131). This work is known for its solution of the various cases of the cubic equation by finding the intersections of appropriately chosen conic sections.
A collection of 24 mini-posters, each containing a quotation about mathematics.
The sum of the two digits of a 2-digit number is 9. If 45 is subtracted from the number, the result will be expressed by the digits in reverse order. Find the number.
Three congruent circles of radius 6 inches are mutually tangent to one another. Compute the area enclosed between them.
There are two piles, one containing 9 gold coins, the other 11 silver coins.
A gentleman has bought a rectangular piece of land whose perimeter is to be 100 rods.
Image of first arithmetic book published in the English colonies in what is now the Eastern United States
A man hired a horse in London at 3 pence a mile. He rode 94 miles due West to Bristol then due north to Chester, whence he returned toward London for 66 miles, which put him in Coventry.
A collection of illustrations of Inca quipus, with references to their earliest descriptions.