Mathematical Thinking and Learning. 2009;11(1-2):79-91. doi: 10.1080/10986060802583998 Q21.52025
Solving Subtraction Problems by Means of Indirect Addition
用间接加法解决减法问题
DOI: 10.1080/10986060802583998
摘要
Mathematical Thinking and Learning. 2009;11(1-2):79-91. doi: 10.1080/10986060802583998 Q21.52025
DOI: 10.1080/10986060802583998
摘要