Use this lesson plan and class activity to explore how much electricity your students use on a typical day. Compare different appliances and find out how many kilowatts each consumes. Convert watts to kilowatts and compare numbers in decimal form. Add decimals together to find the total amount of electricity a student uses each day. Extra helps are available for students who may need step by step instructions.
CCSS.4.MD.A.2 – Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit.
CCSS.4.NF.C.7 - Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.
Science - OH.4.PS.4 Electrical energy in circuits can be transformed to other forms of energy, including light, heat, sound and motion.
4-page Lesson Plan
3 Student Handouts (How Much Electricity Do I Use Worksheet, Comparing Appliances and Comparing to Peers, Comparing Decimals Support Worksheet)
3 Visual Aid Printouts for Comparing Appliances