Herzberger Quader
{{Short description|Three-dimensional packing puzzle}}
The Herzberger Quader is a solid dissection puzzle invented by German mathematics teacher Gerhard Schulze.{{cite journal |url=https://mathematikalpha.de/?smd_process_download=1&download_id=9292#19 |journal=Mathematische Schülerzeitschrift alpha |language=de |volume=24 |year=1990 |issue=6 |page=137 |author=B. Junghanns |title=31. Ausstellung 'Herzberger Spiele'}}
It was named after his home-town Herzberg, and Quader is the latin-derived German word for a rectangular cuboid.
Design
File:herzberger_quader_cuboid.svg
The Herzberger Quader consists of a set of all possible polycubes from dicube to tetracubes.{{cite journal |journal=Alpha – Mathematik Als Hobby |language=de |volume=31 |year=1997 |pages=73–105 |author=Gerhard Schulze |title=Der Herzberger Quader}}
The eleven pieces together have 40 unit cubes and thus can be stored in a 2 × 4 × 5 box.
Possible problems
{{float right clear none|File:Soma_cube_figures.svg}}
Besides stowing the Herzberger Quader in its box there are a lot of figures that can be built using all parts. Various subsets can be used to form a 3 × 3 × 3 cube, one of them is the famous Soma cube.
Much more demanding tasks ask for the number of all different possibilities to arrange the initial parts in a certain figure. Or proofs are to be given for which figures can be realized or not realized with which polycubes.
History
Author of the Herzberger Quader is Oberstudienrat Gerhard Schulze (1919–1995), who was intensively engaged in mathematical games during his extracurricular activities in the years 1982–1994.{{cite journal |journal=Alpha – Mathematik Als Hobby |language=de |volume=28 |year=1994 |issue=1 |pages=16–17 |author=Gerhard Schulze |title=10 Jahre 'Herzberger Spiele'}}
On the occasion of the 800th anniversary of his hometown Herzberg in 1984, the Herzberger Quader was produced for the first time and thus made known to a broad public.
Today, the Herzberger Quader is suggested to be used in the context of mathematics education.{{cite web |url=http://www.fachmoderator-mathematik.de/index.php?id=125 |website=Fachmoderator Mathematik |language=de |author=Dirk Tönnies |access-date=2023-12-05 |title=Herzberger Quader}}{{cite web |url=https://app.meinunterricht.de/dokument/5cdac28a812e3c0015c4f556 |website=meinUnterricht |language=de |author=Andreas Koepsell |access-date=2023-12-05 |title=Bauen mit Klötzen}}
References
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