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Internet Resources

We have compiled a collection of internet resources that can be useful in teaching particular aspects of numeracy. If you know of resources you would like us to add to the collection, just use the simple submission form to tell us about them.



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Classic Fermi Questions

This site works out the solutions to the questions, "How many Piano tuners are there in NY City?" and "how many jelly beans ...

Fermi Estimates II: Overview

This site provides worked out solutions, and provides examples of good and poor worked out solutions.

A Garden of Fermi Problems at Hampton University

An introduction to Fermi questions with a list of examples. This site also provides a worked out solution to the Chinese tea question and links to other sites.

Percent Change

Article that explains how to calculate percent change. Also provides example relating to murder statistics.

Percentage Change Calculator

This calculator allows students to type in an old and new number and calculate the percent change. This site also offers a good percent change tutorial.

Grade 8 Easy Worksheet

This site allows teachers to customize their own worksheets on a broad list of math concepts. Percent change worksheets are under 8.3i.

Word Problems: Percent Increase and Decrease

Percentage tutorial with word and numerical problems, lecture, and solutions for students. Includes hints and realistic problems

Fermi Questions

This site explains what Fermi Questions are (and provides examples of them). This site also contains links to other Fermi Question sites.

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