Lesson 7 MoneyMoney: Making Trade EasierTeaching Objectives:1. To teach that the use of money as a medium of exchange is more efficient than barter because money reduces the cost of trade.Economic...

Lesson 8 Specialization and Division of Labor Specialization and Division of Labor: Making Production More Efficient Teaching第8课专业化和劳动分工使得生产更高效的教学：劳动的专业化与分工Efficient Teaching Objectives:1. To ...

Lesson 9 CapitalCapital: Making Work More Productive第9课资本：使工作更具生产力Teaching Objectives:1. To teach how using physical capital in the production process increases productivity.2. To teach bow tech...