Abstract: From business decisions and personal finances to government policy and environmental monitoring, the need for school graduates to understand and be able to use quantitative thinking has never been greater Daily headlines use quantitative measures to report on public opinion, financial markets, school test scores, risks of disease, consumer prices, and refugees from ethnic wars. Anyone who wishes can obtain data about clinical trials of new drugs, educational expenditures in local school, projections of government budgets, and indicators if climate change.