new math

noun

a unified, sequential system of teaching arithmetic and mathematics in accord with set theory so as to reveal basic concepts: used in some U.S. schools, especially in the 1960s and 1970s.

Origin of new math

First recorded in 1965–70

Also called new mathematics.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for new maths

new maths

noun

(functioning as singular) British an approach to mathematics in which the basic principles of set theory are introduced at an elementary level

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012