We propose an artistic-mathematical challenge.
In this painting, realized in the late 1800s, a lesson of math is represented.
The teacher asked his students to do this operation in their minds:
I'll tell you that the answer is 2, now you need to find:
1 which property of these numbers could have been used to solve this hard calculation in your head
2 if this is the only series of 5 consecutive terms that has this property
3 the name and the artist of the painting and to which real character it's referred
I invite you to propose other artistic-mathematical games!
The Greek team found an interesting parallel to the beautiful paining.
Here is a photo from the Zosimaia Academy in the town of Yannina in Greece showing a trigonometry class. Note that there is a girl among the boys, too. We are guessing the photo is early 20th century.
Here is a nice Maths lesson we found, the boy looks a bit overwhelmed, does he not?
Photo © Victoria and Albert Museum, London