Objective

By the end of this lesson, you will be able to apply arithmetic concepts to solve problems related to coal.

Materials and Prep

• Pencil
• Blank paper
• Calculator (optional)
• Prior knowledge of basic arithmetic operations (addition, subtraction, multiplication, and division)

Activities

1. Research: Learn about coal and its importance as an energy source. Write down at least five interesting facts about coal.

2. Coal Mining Word Problems: Solve the following word problems related to coal mining:

   • "A coal miner extracts 2,500 tons of coal in a day. If the coal is sold for $50 per ton, how much money does the miner earn in a day?"

   • "A coal-powered plant requires 10 tons of coal to produce 1 megawatt-hour of electricity. If the plant generates 500 megawatt-hours in a day, how many tons of coal are needed?"

3. Coal Consumption Comparison: Research the average annual coal consumption of different countries. Create a bar graph comparing the coal consumption of at least three countries.

Fifth Grade Talking Points

• "Coal is a fossil fuel formed from plants that lived millions of years ago."
• "Coal mining is the process of extracting coal from the ground."
• "Coal is an important energy source used for electricity generation and industrial processes."
• "To calculate the earnings of a coal miner, we multiply the amount of coal extracted by the price per ton."
• "To determine the amount of coal needed to generate electricity, we divide the total megawatt-hours by the amount of coal required per megawatt-hour."
• "Bar graphs are useful for comparing data or quantities. They consist of bars of different lengths representing different values."