Knots Unravelled

[2][4][5][6] Small exercises, called "tasks" and often involving practical experiments rather than mathematical calculation, are scattered throughout the book, with answers at the end.

Chapter five covers tricolorability, an invariant defined by coloring the arcs of a diagram according to certain rules.

[3][4][5][6] Other material in the book includes historical asides, pointers to research topics, many illustrations, and an appendix with a table of small knots.

[5] Knot theorist Scott Taylor describes it as "filled with delightful mathematical ideas", an ideal way to attract bored students to mathematics,[4] and Jeff Johannes describes it as "my new favourite for introducing knot theory to non-mathematicians".

[5] However, reviewer Roger Fenn suggests that, for use in secondary-school mathematics classes, the section giving solutions to the tasks needs expansion.