Double-digit addition is just one of the many mathematical concepts that students are expected to master in first andsecond grade, and it comes in many shapes and sizes. Many adults are probably comfortable performing double digit addition withregrouping, also called borrowing or carrying. The wor...
Multi-digit subtraction is difficult for students to learn. The purpose of this study is to explore how second-grade students communicate their understanding of double-digit subtraction through the use of manipulatives/tools. This qualitative study reports on six case studies of second-grade students...
当当中华商务进口图书旗舰店在线销售正版《海外直订Subtraction Workbook: One Page A Day Math Single and Double Digit Subt 减法练习册:每日一页数学单位数和两位数减法问题练习》。最新《海外直订Subtraction Workbook: One Page A Day Math Single and Double Digit Su