General 

• Gamequarium-Online Math Tools
  Students will find useful online math tools of a clock, and several measurement converters.

• A Math Dictionary for Kids
  This site has an animated interactive math dictionary including math definitions, examples, activities and practice.

• Print n’ Learn Reference and Exercise Charts
  Print reference charts on time, money and measurement. Grades K-5.

Measurement

• ABCTeach-Measurement Charts
  ABC Teach provides charts on liquid measurement, U.S. and metric measurement and a teaching ruler.

• Math Forum-Ask Dr. Math
  Ask Dr. Math your measurement questions.

• Math League-Metric Measurement Charts
  Find several metric measurement charts at Math League. 

Money

• Currency Converter 
  Convert the U.S. dollar into another country’s currency.