Curated OER
College Education
What do Bill Gates and Mark Zuckerberg have in common? They're both billionaires, and neither one has a college degree! Using the website, scholars explore whether having a college education is truly worth the money it costs. They read...
Council for Economic Education
Econ Ed Link: Compound Interest Calculator
The activity investigates compound interest, principal, and interest. Students can calculate different savings over time by inputting the monthly savings, starting age, and interest rate. The learning tool includes a graph that shows the...
Purple Math
Purplemath: Factorials
A review of factorials in the areas of combinations, permutations, probability, and the Binomial Theorem is presented. Examples are worked out and explained, complete with graphing calculator steps.
Wyzant
Wyzant: Calculators Index
Online calculators will help you solve equations, factor, complete the square, simplify, graph, and substitute.
Teachnology
Teachnology: Spreadsheet Guide for Teachers
A Spreadsheet is a wonderful tool with applications well beyond simple calculations. This site provides a collection of lesson plans, tutorials and worksheets that help bring spreadsheets into the classroom.
NOAA
Noaa: Ngdc: Sunspot Numbers
This brief article examines the historical work on sunspot recording by Rudolph Wolf. Also discusses how sunspot numbers are calculated today and provide graphs of sunspots numbers from past years.
University of Illinois
University of Illinois: Spreading It Thick
Resource contains the definition for variance. It also shows students how to calculate the variance. There is a link to a bar graph that displays variance for the data example.