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To the Main Page "Mathematische Basteleien" ... You turn the cup upside down and you let the dice roll to a standstill. ... If there is a metal piece inside the dice, but not symmetrically, the dice will ... http://www.mathematische-basteleien.de/.
... O'A'B'C'. (http://www.math-inf.uni-greifswald.de/mathematik kunst/themen.html) ... Actually the drawing with equal edges on the left was not used as a picture of a cube. ... From time to time stones rolled down the rocks (only acoustically).
The reason that the strip of paper bends is not the difference in temperature between the top and bottom side. ... "Did you ever cut a Moebius strip along the 1/3 line, instead of down the middle? Try it ... http://www.mathematische-basteleien.de/.
... from a sheet of paper. If the paper is not printed inside and sturdy, you can even drink from it. ... ink jet printers will do. Fold the upper half down on the red line.
A simple puzzle, but not easy to solve. ... To the Main Page "Mathematische Basteleien" ... Push the front square down horizontally. The blue lines are folds and ...
To the Main Page "Mathematische Basteleien" ... Red means insoluble. Black means, that the figure is not solved, but it is not proved that there is no solution. ... Tetrominos fall down in a box. ... http://www.mathematische-basteleien.de/.
It is not wise to introduce the height at the wall and the distance of the foot of the ladder from the wall as variables. The calculation is simpler ... How fast is the top of the ladder moving down the wall? ... http://www.mathematische-basteleien.de/.
... for ink jet printers will do. Fold the upper half down on the red line. ... If the paper is not too thick, you even can repeat these steps and look for more sails ;-).
You look for the edge cube blue/white and rotate it to front/down/middle. ... If the remaining cubes are not at the correct positions, you have to switch them over ...
To the Main Page "Mathematische Basteleien" ... if the words stand upright. The black Magic stands upright, if the words stand upside down. ... The squares are not of the same kind. If a string gets ... http://www.mathematische-basteleien.de/.