Free How Do We Write A Multiplication Equation To Find The Area Of A Rectangle? Lesson Plan for 3rd Grade Students

Topic: Writing a multiplication equation to find the area of a rectangle

Objectives & Outcomes

• Students will be able to write a multiplication equation to find the area of a rectangle.

Materials

• Rectangles of various sizes
• Calculator (optional)

Warm-up

• Review what a rectangle is and its properties (e.g. length and width, opposite sides are parallel, etc.). Ask students to provide examples of rectangles they have seen in the real world.
• Ask students if they have ever had to find the area of a rectangle before and how they did it.

Direct Instruction

• Explain that there are two ways to find the area of a rectangle: by using multiplication or by using division.
• Multiplication: Define multiplication as the process of multiplying a number by itself to find the result. For example, 3 x 3 = 9.
• Division: Define division as the process of dividing a number by another number to find the result. For example, 9 ÷ 3 = 3.
• Explain that to find the area of a rectangle using multiplication, we need to first find the width and then multiply it by the height.
• To find the area of a rectangle using division, we need to first find the height and then divide it by the width.

Guided Practice

• Provide students with a real-life example of a rectangular object and have them work in pairs to find the area using both multiplication and division.
• Have students share their answers and explain their reasoning.

Independent Practice

• Have students create a classroom-sized rectangle out of poster board or construction paper and measure its area.
• Have students write a multiplication equation to find the area of their rectangle using both multiplication and division.
• Have students present their calculations to the class and explain their reasoning.

Closure

• Review the steps for writing a multiplication equation to find the area of a rectangle: multiply the length times the width, and then add any additional terms that are needed to make the equation true.
• Ask students to share any questions or challenges they encountered while practicing this skill.

Assessment

• Observe students during independent practice to check for understanding.
• Have students turn in their completed multiplication equations to be checked for accuracy and correct use of multiplication to find area.