Stone's hexaflexagon, with its 10 triangles (two of which are glued together), is shown along with assembly instructions (you can also admire it on page 9 and on the cover of this issue). There is also a "glueless flexagon" (19 triangles and 2 tabs to slot together) and a blank flexagon to assemble, then decorate once you are familiar with the alternating faces and the object's symmetry properties. A historical note, a description of its properties and a bibliography complete the leaflet.
All these items can be found at **www.mathkang.org/flexagones** once the leaflet has been completely cut up.
Les flexagones du Kangourou. Eight-page leaflet, 2.50 euros from www.mathkang.org
