The MegaPenny Project - How big is a thousand pennies? How about a million, or a billion or even a quintillion? Get a feeling for large numbers by comparing them to the penny.
How Much is That Worth Today? - Comparing the purchasing power of money in the United States (or colonies) from 1665 to any other year including the present.
Math in Daily Life - How do numbers affect everyday decisions? (Casino Probablility, Compound Interest, Credit Card minimum payments, Population (Exponential) Growth)
Hotmath - guided step-by-step explanations for the actual homework (odd-numbered) problems in popular math textbooks.
Algebra High School Assessment - View and print previous assessments; View grading rubrics and answer keys; Take and score practice tests.
Geometry High School Assessment - View and print previous assessments; View grading rubrics and answer keys; Take and score practice tests.