## Friday, January 14, 2011

A Math Activity

If you have access to the electric meter in your home or building, you can read the meter to see how much electricity is being used each day. (Most meters have 5 dials.)

Steps:
• Record the readings at a specific time of day by recording the numbers displayed on the dials.
• The next day, at the same time, record the numbers displayed on the dials.
• Subtract yesterday's reading from today's reading and you can get an idea of how much energy (kilowatt hours) is used in one day.
• Have the children continue with their readings for a few days. Then they can put the data in a chart or create a graph of the data.
• Younger students can calculate the amount of electricity used in 3 days or 7 days, etc. Older students can also find the average amount of electricity used per day.

#### 1 comment:

1. Hello,

Electric meter can easily be read if you understand some basic rules. Each of the five dials represents one digit of the present reading. Electric meters are exclusively ampere-hour meters, measuring electric quantity directly and electric energy only indirectly, on the assumption that the pressure of the supply is constant. Thank you.