What is mastery approach?

Is it true when Series EE savings bonds are issued by the US Treasury and sell at half their face value? Why do investors bother to look at the historical performance of a company when future behavior is what really counts? What is the concept of GDP? What was the price of a loaf of bread in 1946? How are proitist are harmful to the evoiroment? Is Fort Knox an army base? Why was the fur trade such a big deal? When was Bangko Sentral ng Pilipinas created? When the editor of a newspaper chooses to publish a story on the economy rather than a story on health care she is exercising .? What is the difference between bartering and borrowing? What percentage of Bolivia's people live below the poverty line? If a business fails to meets it's responsibilities to its employees what is likely to occur? What is the importance of women entrepreneurship? What is an economic needs? Efforts by the federal reserve system to control the money supply and interest rates are known as what? What is price equilibrium or market equilibrium? When Mary buys 8 widgets for 40.00. She adds 1.00 in enhancements to each widget and sells them for 9.00 each. What is marys estimated gross profit margin? What is a basic problems of economics? Which would be an implicit cost for a firm? What the gross domestic product is neither growing or shrinking a country's economy?

What is mastery approach?