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# All posts by Franka Miriam Brueckler

• Christmas maths activity: Make your own Christmas tree

A Christmas tree has roughly a conical shape. Consequently, it is quite easy to make a decoration in the form of a Christmas tree from cardboard or other suitable material. by Franka Miriam Brueckler The surface of the...

• Posted February 3, 2016
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• Christmas maths activity: Stars and rotational symmetry

One of the most used Christmas motives are stars. As ornaments they appear in various designs and with various numbers of spikes, but one thing is common to most Christmas star designs: they posess rotational symmetry. by...

• Posted February 3, 2016
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• Guessing the Numbers

For this trick, you need a number of small counters: coins, pebbles, matches, … by Franka Miriam Brueckler The effect You, the performer, ask a spectator to take the counters into his/her hands and distribute them in...

• Posted February 1, 2016
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• A Beer Trick

The trick is performed by a (mathe)magician with a participator. In the following dialogue, the mathemagician’s text is printed in Roman, and the participator’s in Italics. If you do not know the trick, I encourage you to...

• Posted February 1, 2016
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• Inductive Magic

This trick, as well as most of the other mathematically based magic tricks, belongs to the class of so-called parlour tricks, which means that it needs simple and easily obtainable equipment and is suited for performances in...

• Posted February 1, 2016
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• Two rows of pebbles

In this trick we use a number of smaller pebbles and the performer asks a spectator to choose any odd number of pebbles  by  Franka Miriam Brueckler For this trick you need a number of smaller items, e.g. pebbles...

• Posted February 1, 2016
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• Always 22

A number magic trick with number 22. by Franka Miriam Brueckler Number magic is one of the most important “subclasses” of mathematical magic, especially useful in spontaneous situations in small groups of people as it usually requires no...

• Posted February 1, 2016
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• The four ducks trick

The described trick is a “ducky” version of the trick known as Yates’ Four-Divination, which is described in Martin Gardner’s book “Mathematics, Magic and Mistery” (Dover Publ., New York, 1956). by Franka Miriam Brueckler Move the ducks! There...

• Posted February 1, 2016
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• Gergonne’s trick

Gergonne’s trick is probably the best known of the mathematically based magic tricks, and is known in several variations… by Franka Miriam Brueckler It was first analysed and generalised by the 19th century French mathematician Joseph Diaz...

• Posted February 1, 2016
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• The clairvoyant (mathe)magician

I suppose that a pack of cards is the most important prop for a populariser of mathematics. Or a mathematics teacher. Or a mathematics enthusiast. Or … Playing cards can be used to teach numbers (obviously), introduce...

• Posted February 1, 2016
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