The circular flow of income diagram is a traditional starting point for economics taught at the high school and college level. Although it is an incredibly useful tool for illustrating how money flows through the economy, the model can be abstract and relies on a sophisticated vocabulary that makes it impractical for use with younger students.…

Population trends--birth and death rates, immigration patterns, sex ratios, and life expectancies--are one of the most important issues facing the international community. These trends' relationship to the world economy, the environment, and developing countries' ability to meet the needs of growing populations is a topic appropriate for the…