Background related to mass measurement:
As students learn about mass measurement, they will first learn the use of the simple balance in elementary school. The triple beam balance is usually introduced in middle school or high school. This tool allows for accurate measurement of mass to 1/10th of a gram. Visually impaired students can be taught to use this tool but will require some assistance.
Alternatively, students can use any number of talking scales available on the market. The electronic OHaus Scout Pro balance allows students to hear the mass of a given object when the balance is connected to a computer on which Logger Pro has been installed (both balance and and Logger Pro software available from www.independencescience.com)
Background related to this mass measurement lab:
As the material utilized to make pennies was cheapened from mostly copper to mostly zinc in 1962, the mass of a penny decreased. Students will ascertain when this change occured as they measure a penny from each decade. Please see attached lab.
1. Practice accurate measurement of mass
2. Complete research related to the reason for change in the mass of a penny over the past 60 years.