How To Use A Protractor. Lesson Plan for 7th Grade Students

Topic: How to use a protractor

Objectives & Outcomes

• To be able to use a protractor to measure and draw angles bigger than 5 degrees but smaller than 345 degrees.

Materials

• Protracer
• Paper
• Pencil

Warm-up

• Ask students if they have ever used a protractor before.
• Ask them to describe how to use a protractor.

Direct Instruction

• Show students a protractor and explain that it is used to measure angles.
• Explain that an angle is the figure formed by two lines that meet at a point.
• Point out the lines and the point on the protractor.
• Explain that the protractor is divided into degrees, with 0 degrees at the top and 360 degrees at the bottom.
• Show students how to place the protractor on a piece of paper, with the 0 degree mark aligned with the top of the page.
• Demonstrate how to use the inner and outer edges of the protractor to measure an angle, starting at the 0 degree mark and rotating clockwise.
• Show students how to use the scale on the protractor to determine the angle measure in degrees.

Guided Practice

• Have students work in pairs to practice measuring angles with their protractors.
• Give students a few different angled objects (such as coins or beads) and have them measure and record the angle measures in degrees.
• Have students check their work with the help of a teacher or tutor.

Independent Practice

• Have students use their protractors to measure and record the angles of several different objects (such as coins or beads).
• Encourage students to measure and record the angles carefully and accurately.
• Have students create a graph or table showing the relationship between the angle measure and the objects' shape or size.
• Have students present their findings to the class.

Closure

• Review the main points of the lesson, including how to use a protractor to measure angles and how to calculate the degrees from the measured angle measure.
• Ask students to share one thing they learned or found interesting during the lesson.

Assessment

• Assess students' ability to measure angles with a protractor and calculate degrees by measuring and calculating in pairs.
• Use the independent practice activity as a formative assessment to check for understanding.
• Give a quiz at a later date to assess students' retention of the material covered in the lesson.