 The Schoolmaster's Assistant, Being a Compendium of Arithmetic Both Practical and Theoretical

"The Schoolmaster's Assistant: Being a Compendium of Arithmetic Both Practical and Theoretical" is a mathematical textbook written by the American educator and mathematician Thomas Dilworth, first published in the 18th century (specifically in 1765). The book was designed as a comprehensive guide for teaching arithmetic, providing a wide range of mathematical concepts, techniques, and problem-solving methods.