An interactive version of the Print Workbook that is held on the Big Tree platform. It provides students with the ability to learn on different devices (PCs, tablets, mobiles phones). It features an automatic scoring feature providing instant feedback and allows results to be monitored by the student and teacher. Это и многое другое вы найдете в книге Open Mind British English: Intermediate Online Workbook (Ingrid Wisniewska, Dorothy E. Zemach)