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Open Doors with the Mouse 2026

A math lecture with an audience in the front row, radio chats with the Mouse, the Elephant and the Duck, and a round of radio direction finding where the kids beat me.

If I had no kids, I would need an excuse to visit such exciting things. Luckily, I don't.

We packed up our K3 and a friend and drove to Würzburg.

The Mouse, the Elephant and the Duck stand on a meadow in front of a frame with the words Türen auf mit der Maus

Math at the university

First stop was the university, the math department. There was a taster lecture, a child-friendly introduction to topology, and of course K3 and the friend sat in the front row. Even if it doesn't look like it: about 30 people were there, they just all sat in the back rows.

What a nice change from what I heard as a child: math is not for girls. Who remembers that?

After the lecture there were workshops and a small rally with brain teasers and a big puzzle. Kids often don't need much: a big projector that lets you cast shadow figures on the wall keeps them busy for quite a while.

A lecture hall with empty rows, two girls sit in the front row, a lecturer speaks at the frontPhotographed from above: children and adults kneel and stand around a large, colorful puzzle on the floorTwo pairs of hands form hearts, on the wall behind them they cast a heart pattern as shadows

Everything about Wümax is on the university's website. By the way, there are also the MathExplorers, an offer for kids from grade 5: once a month they get a letter with information about an area of mathematics and a matching brain teaser, and they can send in their solution and get it corrected.

Radio, soldering, direction finding

Afterwards we went to the amateur radio club in Würzburg.

#mitderMaus