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Marion Walter was born in 1928 to a Jewish family in Berlin.

In 1939, she escaped Nazi Germany on a Kindertransport - a rescue operation that evacuated thousands of Jewish children to England before World War II.

Eventually Marion arrived in the US & earned her doctorate in mathematics education from Harvard. She became a professor & founded the Boston Area Mathematics Specialists focused on improving math education for children.

Marion passed away in 2021, at age 92. https://mathshistory.st-andrews.ac.uk/Biographies/Walter/