Grade 9 Science
Electric current is the flow of electric charge.
Grade 9 Math
Analyzing the validity, reliability, and representation of data enables us to compare and interpret.
Students will be able to:
Calculate the electricity used in a typical household and learn about watts, kilowatts and kilowatt-hours.
Investigate how much electrical energy is being used around your house.
Your students are familiar with the idea of conserving energy at home and at school. Sure, they’ve been asked to turn off lights and unplug electronics when they leave a room, but making a direction connection between how much energy we use and what it costs can help students identify even more ways to avoid wasting energy at home.
Understanding how much energy it takes to operate an appliance helps students determine which ones are more or less energy efficient.
A number of terms and units are needed to calculate energy usage. Teaching notes in each activity will provide the definitions and formulas you need to know: watts and wattage; kilowatts; energy and gigajoules; and equations for energy, power and time.
The activities in this lesson include small group and class discussions and a take-home audit that provides for assessment of graphing skills and curricular competencies in math and science.