The financial security that comes with wealth accumulation requires an understanding of the time value of money. Students begin this module with a lesson on opportunity cost, the most fundamental consideration in any personal financial decision. Students move on to a lesson on interest where they will recognize the importance of interest in sheltering them from the higher cost of living they are certain to experience in later years. The increase in their future costs will be due to inflation, the third subject they will encounter in this program. Students will use their knowledge of opportunity cost, interest and inflation to determine the future value of investments they may make as young adults and the present value of a sum of money they hope to have at a later date.