A Japanese abacus (soroban) held over an older style Chinese abacus (suan pan). Photograph by Forrest M. Mims IIIFORREST M MIMS 111 Photo Caption: A Japanese abacus (soroban) held over an older style ...
The need for schools to adopt innovative methods of teaching mathematics in order to erase the phobia students have for it and thereby bolster the pass rate has been stressed. In fact, mathematics ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果