Basic actitivies (computer-graded)
In this unit we discuss the history of money from primitive barter system to coins, paper money, electronic commerce, and finally to bitcoin. What will they think of next?
Pick the correct answer from a list.
Listen to the word and type it in.
Type in the correct answer for each definition.
Advanced activities (teacher-graded)
Record yourself speaking English.
Pick a question and write about it.