Tag Archives: Pennsylvania

50 (states)

UNITED STATES OF AMERICA For a powers of 10 project, you could pick a state and look at different powers of 10 like land area in square kilometers, largest cities, natural land formations like depths of lakes, or elevation of mountains. You could compare the census reports (every 10 years) of a few cities and [...]

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  • Countdown to Powers of Ten Day

    • 10/10/10 1511 days ago