Geodesic
African dance rattle capsules from Cameroon to Madagascar, from Somalia to Mozambique: Plaiting a symmetric, nonahedral shape
The following paper presents examples of dance rattles from several parts of Africa: from Cameroon in the West-Central Africa, from Somalia and Kenya in Eastern Africa, and from Madagascar and Mozambique in Southern Africa. The capsules of these rattles are plaited in a similar way. They display a nonahedral shape (nine faces) and each capsule is made from only one strip of a leaf. A plaited capsule can be understood as an alternating knot, precisely as knot 940 in the international knot table. The paper shows how to weave a strip of cardboard paper to produce the nonahedral shape.
Classification : 20H15 
@article{VM_2012_14_3_a2,
     author = {Paulus Gerdes},
     title = {African dance rattle capsules from {Cameroon} to {Madagascar,} from {Somalia} to {Mozambique:} {Plaiting} a symmetric, nonahedral shape},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VM_2012_14_3_a2/}
}
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Paulus Gerdes. African dance rattle capsules from Cameroon to Madagascar, from Somalia to Mozambique: Plaiting a symmetric, nonahedral shape. Visual Mathematics, Tome 14 (2012) no. 3. http://geodesic.mathdoc.fr/item/VM_2012_14_3_a2/