From the Chief Editor of the book: “Chapter 1 by Jake Wildstrom is about center-worked crafts. The mathematical meat of the chapter has to do with buffers. Using the language of recreational mathematics, Wildstrom looks at polyominoes, which are familiar to lay people as Tetris pieces and similar objects. He gives careful instructions involving unusual and inventive stitches for crocheting the polyominoes made of four and five base squares (tetrominoes and pentominoes). Amazing contemporary pieces of art can be assembled from the resulting polyominoes!”