Ray’s Arithmetic was published in 1877 and the most common math book used in one room school houses. Some of the things i noticed: it emphasizes the importance of using concrete examples (manipulatives.) It stresses the orderliness of math (patterns.) And it introduces multiplication (repeated addition) and division (repeated subtraction) to young children. #vintagemathbooks #oldschoolmath #oldschoolmaths #mathhistory #mathbook #oldmathvsnewmath #oldmath

Easy to State but Impossible to Solve Exploring the Most Famous Unsolved Problems in Mathematics