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Use of color definitely can be helpful in learning mathematics. Presentation matters. I have given up on texts using an awful font: if learning the idea requires 95% of my brainpower, and deciphering the bad presentation uses up 10% of my brainpower, it makes the difference between learning and not learning. That said, using color intelligently requires ...


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Part of the cost of a printed book is the cost of paper, printing, and binding (PPB). These costs can be lowered with economies of scale when you are printing a lot of copies. Many of the costs are basically costs to set up for a run, while the incremental cost of printing one more book is small. (This is for traditional printing, not print-on-demand.) Upper-...


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