2021-03-14: International Day of Mathematics with MCM@home

March 14 is International Day of Mathematics (IDM) – and MathCityMap is there, too, of course! Our MCM educator Simone has created a great MCM@home trail. We look forward to your participation! A truly well-rounded event! The MathCityMap@home-Trail makes clear in which objects mathematics – especially circles and the number Pi – can be found. […]

March 14 is International Day of Mathematics (IDM) – and MathCityMap is there, too, of course! Our MCM educator Simone has created a great MCM@home trail. We look forward to your participation!

A truly well-rounded event! The MathCityMap@home-Trail makes clear in which objects mathematics – especially circles and the number Pi – can be found. The mathematical walk takes place in a different way than usual from home. Nevertheless, there is a lot to discover and calculate!

All you need to do is download the MathCityMap app. You can access the trail by adding routes and entering the given code. MCM users around the world were engaged in creating MCM@home trails for International Day of Mathematics (Pi Day):

  • Simone Jablonski created a MCM@home trail in Germany. The Digital Classroom can be invoked by entering the code s161437. Participation is possible between 0 and 23:55.
  • In Italy, Flavia Mammana and Eugenia Taranto prepared two MCM@home trail. With the code (044258) you can work on the trail for lower secondary students. The second trail (code 184244) treats topics on upper secondary level.
  • In Slovakia, Sona Ceretkova created the digital learning trail “[MCM@home]Pi-Nitra.” This can be accessed with the code 084229.
  • In Indonesia, Adi Nur Cahyono has prepared an MCM@home trail, which can be worked on today with the code s281455 as part of a digital classroom.

Happy Pi Day

Friends of special dates and numbers might already have noted it in their calendar: Today is Pi Day. Based on the American spelling of today’s date (3/14) and the beginning of the number Pi with its first two decimals, the 14th March is perfect to celebrate Pi. Therefore, today everything at MCM revolves around the […]

Friends of special dates and numbers might already have noted it in their calendar: Today is Pi Day. Based on the American spelling of today’s date (3/14) and the beginning of the number Pi with its first two decimals, the 14th March is perfect to celebrate Pi. Therefore, today everything at MCM revolves around the circle and we would like to celebrate this with the help of one of our various tasks on the topic of the circle.


Task: Paving stones in a circle (Task number: 2007)

How many paving stones are in the red marked area?


Despite various approaches, the number Pi is central while solving the problem. On the one hand, it is possible to determine the number of paving stones in a certain area (for example one square meter) and to project them to the total area. The task can be solved particularly clever by considering a paving stone as a unit and expressing the radius of the circle by the number of stones.

This is just as one example of many tasks in which the number Pi is relevant in everyday life and for the math trail idea (e.g. traffic signs, advertising pillars, trees). In this sense: Happy Pi day!

By the way: the task is part of a trail around the Stuttgart’s stock exchange. They were created by our team and will be officially opened in April.