Tarquin Curiosities & Flexagons


	Mathematical Curiosities To cut out and glue together 1 899618 35 X Jenkins & Bear All the colourful models in this collection, when cut out and glued together have curious and interesting properties. Some rotate, some fold and unfold, some twist and others fit together in unexpected ways. All illustrate mathematical ideas in an amusing and interesting fashion. Also included is a minibook which gives background information and further ideas. £4.95 (inc VAT)		More Mathematical Curiosities To cut out and glue together 1 899618 36 8 Jenkins & Bear A further collection of colourful models offering insights into mathematical concepts and including a minibook of background information and ideas. £4.95 (inc VAT)




					Metamorphs Transforming mathematical surprises 1 899618 60 0 Robert Byrnes Metamorphs are curious and interesting paper models which will transform step by step through a sequence of different shapes before finally returning to their original starting positions. There are ten colourful two and three-dimensional models to cut out and make and also an informative text which discusses and explains the principles by which they have been designed. There are two main classes of these objects and both are well represented in this collection, together with an introduction to the importance of degrees of freedom and the limitations of hinges and hinge lengths. Some people will prefer to see metamorphs simply as amusing and rather impressive toys, others as expressions of mathematical principles to be understood and appreciated. £5.95

	The Magic of Flexagons Paper curiosities to cut out and make 1 899618 28 7 David Mitchell Flexagons are made by folding paper in certain ways and when they are flexed, turned and unfolded in different ways, they show puzzling and curious effects. Some of this extensive collection are in the form of puzzles to be solved, others have rather mysterious properties. £4.95 (inc. VAT)