PBS
The Lowdown — Living Wages in CA: Ratio and Rate in the Real World
How much money is enough money? Future wage earners explore the minimum hourly wage and then use it to calculate monthly and yearly earnings. They use an interactive to consider living costs and determine whether earning a minimum wage...
National Council of Teachers of Mathematics
The Math Forum: Lines and Slope: Chameleon Graphing
Join Joan the chameleon in an exploration of lines and slope. You'll be drawing lines, calculating slope, using equations and more!
Curated OER
Graphing Calculator T1 81 Click to Enlarge
This Smithsonian article traces the teaching of math in America through "Slates, slide rules, and software." Includes sections on The Early Republic, The World Stage, The Cold War, The Information Age, and Resources.
Curated OER
Science Kids: Science Images: Basic Calculator
This photo shows a basic calculator sitting on a desk. The value of Pi is written to five decimal places on the screen.
Math2
Math2.org: Number Notation
At this website from Math2.org you will find tables with information about number words, meanings, and the symbols used to express them. At the very bottom there is also a Java Base Conversion Calculator.
Calculator Soup
Calculator Soup: Fractions Number Line Chart
Fractions Proportion Scale from 0 to 1 in increments of 16ths, 15ths, 14ths, 13ths, 12ths, 11ths, 10ths, 9ths, 8ths, 7ths, 6ths, 5ths, 4ths, thirds and halves
Calculator Soup
Calculator Soup: Fractions Table
Table shows incremental ordering of fractions with decimal and percentage equivalents.
Curated OER
Science Kids: Science Images: Abacus
A photo of an abacus. Also known as a counting frame, the abacus has been an important tool for making calculations for thousands of years, and is still used in many places today. This particular example is a Russian abacus.
Curated OER
University of Maryland: The Astronomy Workshop
Find tools to calculate astronomical distances and sizes, to view various Solar System models, to compare gravity's affect on weight, and more. A good place to find interesting facts, simple animations, and astronomy links to physics and...
Curated OER
University of Maryland: The Astronomy Workshop
Find tools to calculate astronomical distances and sizes, to view various Solar System models, to compare gravity's affect on weight, and more. A good place to find interesting facts, simple animations, and astronomy links to physics and...
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