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 YearNumberYearNumberYearNumber 1960/1986/1999//// 1969/1988/2000//// // 1972/1989/2001/ 1976/1990//2002// 1977/1991/2003//// 1978///1992/2004// 1979//1993/2005//// /// 1980/1994////2006//// //// // 1982///1995/2007// 1983//1996//2008//// 1984////1997/// 1985//1998///

Coins-R-Us

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.

Summary Range of years was from 1960 to 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 Several years in my range had no pennies and some had only one penny.

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.

Thank you