Lesson Plan: Number, Money and Measure - Area

Grade Level: Third Level

Subject: Mathematics

Topic: Number, Money and Measure

Desired Outcome: I can solve practical problems by applying my knowledge of measure, choosing the appropriate units and degree of accuracy for the task and using a formula to calculate area or volume when required.

Focus: Area

Curriculum Links:

• MTH 3-11a: I can use a range of methods, including mental strategies, to solve problems with whole numbers and decimals.
• MTH 3-12a: I can solve problems involving measure using appropriate units and degree of accuracy.
• MTH 3-13a: I can use a formula to calculate the area of a rectangle and can describe the relationship between the area and the perimeter.

Resources:

• Whiteboard and markers
• Ruler
• Measuring tape
• Worksheets
• Calculators

Introduction (10 minutes):

• Begin the lesson by asking the students if they know what area is and how it is measured.
• Write the definition of area on the whiteboard: “Area is the amount of space inside a two-dimensional shape.”
• Ask the students to give examples of two-dimensional shapes and write them on the whiteboard.
• Explain that in this lesson, we will be focusing on calculating the area of rectangles.

Development (30 minutes):

• Distribute the worksheets to the students.
• Ask the students to measure the length and width of the rectangles on the worksheet using a ruler.
• Instruct the students to use the formula for calculating the area of a rectangle (length x width) to find the area of each rectangle.
• Encourage the students to use appropriate units and degree of accuracy when measuring and calculating.
• Walk around the classroom to provide assistance and answer any questions the students may have.
• Once the students have completed the worksheet, ask them to share their answers with the class and discuss any discrepancies.

Consolidation (15 minutes):

• Write the formula for calculating the area of a rectangle on the whiteboard.
• Ask the students to explain the relationship between the area and the perimeter of a rectangle.
• Provide the students with a real-life scenario where they would need to calculate the area of a rectangle (e.g. painting a wall, laying a carpet).
• Instruct the students to work in pairs to calculate the area of the rectangle in the scenario using the formula.
• Ask the students to share their answers with the class and discuss any discrepancies.

Conclusion (5 minutes):

• Recap the lesson by asking the students to explain what they have learned about calculating the area of a rectangle.
• Remind the students to use appropriate units and degree of accuracy when measuring and calculating.
• Encourage the students to practice calculating the area of rectangles in their everyday lives.

Assessment:

• The students will be assessed based on their ability to measure accurately, use appropriate units and degree of accuracy, and apply the formula for calculating the area of a rectangle to solve practical problems.