author
A practical early-20th-century writer and educator, she is best remembered for clear, hands-on books made to help children learn by making and doing. Her work, often written with Ruby Kathleen Polkinghorne, has an energetic classroom spirit that still feels approachable.

by M. I. R. (Mabel Irene Rutherford) Polkinghorne, R. K. (Ruby Kathleen) Polkinghorne
Writing as M. I. R. Polkinghorne, Mabel Irene Rutherford Polkinghorne was a British author associated with educational and instructional books for children. Library records identify her as born in 1882, and Project Gutenberg lists her most accessible surviving title as Toy-Making in School and Home, written with R. K. Polkinghorne.
Her books suggest a strong interest in practical learning. Toy-Making in School and Home turns craftwork into a cheerful lesson in observation, patience, and design, while other cataloged works credited to her and Ruby Kathleen Polkinghorne include children's religious and educational titles such as Some Bible Heroes and Other People's Houses.
Although detailed biographical information about her appears to be scarce online, the published record points to a writer-teacher partnership focused on making learning lively, useful, and imaginative for young readers.