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The 100 penny project

The 100 penny project. By Ananya Ganesh. Goal. Collect 100 pennies Separate them by year Create a tally chart Draw a bar graph with number of coins and year as axes Observe and summarize. Tally Chart. Coins-R-Us. Summary. Randomly collected 100 pennies.

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The 100 penny project

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  1. The 100 penny project By Ananya Ganesh

  2. Goal • Collect 100 pennies • Separate them by year • Create a tally chart • Draw a bar graph with number of coins and year as axes • Observe and summarize

  3. Tally Chart

  4. Coins-R-Us

  5. Summary • Randomly collected 100 pennies. • Looked at each coin only once – recorded the year and created the tally chart simultaneously. • Created a bar graph. • X-axis showed year of minting and Y-axis showed number of coins.

  6. Summary • Range of years was from 1960 to 2008. • Labels should have constant intervals in graphs so no information is left out. • The year 2006 had the most pennies ( 12) followed by the year 2003. • Several years in my range had no pennies and some had only one penny.

  7. How are coins made ? • First a mixture of zinc and copper is made into a metal sheet. • Next, blanks ( round coins ) are cut out of those sheets by a machine. • The edges of these blanks are run through a machine that smoothens and raises the edges. • Then, the blanks are fed into a mill that stamps the images on both sides of the coin simultaneously. • Finally the coins are counted and packed into large canvas bags to be delivered to the Federal Reserve Bank.

  8. Thank you

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