Focus Plan
Texarkana Independent School District
GRADING
PERIOD:
Teacher:
4th Six Weeks
PLAN CODE:
Tipton
Course/subject:
Mathematics
Grade(s):
6
Time allotted
for instruction:
1 – 1 ½ hours
Title:
What is the Angle Measure?
Lesson TOPIC:
Measuring Angles
TAKS Objective:
Objective 4: The student will demonstrate an understanding of the
concepts and uses of measurement.
FoCUS TEKS and
Student Expectation:
(8) Measurement. The student solves application problems involving
estimation and measurement of length, area, time, temperature,
capacity, weight, and angles. The student is expected to:
(C) measure angles
(6) Geometry and spatial reasoning. The student uses geometric
vocabulary to describe angles, polygons, and circles. The student is
expected to:
(A) use angle measurements to classify angles as acute, obtuse, or
right
Supporting TEKS and
Student Expectations:
Concepts
Enduring Understandings/Generalizations/Principles
The student will understand that
A protractor is a tool used to measure angles.
Protractor
Angle measurement is finding the number of degrees in an angle.
Angle Measurement
A vertex is the point where two or more rays meet.
Vertex
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District
I.
Sequence of Activities (Instructional Strategies)
A.
Focus/connections
After students are seated, hold up the following items:
 a compass
 a protractor
 a ruler
Have students identify the items. Draw an obtuse angle on the board. Next ask the class: Which of the
items you identified could be used to measure the angle on the board?
B.
Instructional activities
(demonstrations, lectures, examples, hands-on experiences, role play, active
learning experience, art, music, modeling, discussion, reading, listening, viewing,
etc.)
After the class has identified that a protractor is used for angle measurement, begin discussing the proper
way to utilize a protractor. Show that each unit of measure on a protractor is a degree (°). To measure an
angle, place the circle or open hole of the protractor on the vertex of the angle. Place the zero line of the protractor
on one side of the angle. Follow the scale from 0 to the point where the other side of the angle meets the scale. This
is the measure of the angle. Read the measure where the other side hits the protractor scale.
Inform students that the size of the angle is not dependent on the lengths of the sides of the angle.
Using an Elmo or overhead, demonstrate how to use a protractor to measure angles. Discuss that angles
are classified by their measurement.
C.
Guided activity or strategy
Have each student get out their protractor. If protractors are not available, the Protractor Worksheet may
be utilized. Hand each student a blank sheet of paper. Have the students draw four angles on their paper
using a straight edge. After students have had time to complete their angles, place students in groups of
3 - 4. Have members of each group exchange angle sheets. Each member of the group will measure the
angles on the sheet they receive. Monitor as students are working. Have the groups check the answers
obtained by each member of the group. After students have completed their measurements, hand each
member of the group a Measuring Angles Practice Worksheet. Let students complete the worksheet and
compare their answers. Students will return to their individual seats to complete the Measuring Angles
Worksheet.
D.
Accommodations/modifications
Students requiring modifications may work with a peer to complete the guided activity.
E.
Enrichment
Students requiring enrichment may reteach the lesson in a small group setting.
II.
STUDENT PERFORMANCE
A.
Description
Students will complete the Measuring Angles Worksheet individually.
B.
Accommodations/modifications
C.
Enrichment
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District
iii.
Assessment of Activities
A.
Description
Individual student grades may be taken on the Measuring Angles Worksheet.
B.
Rubrics/grading criteria
Grades may be taken based on the Measuring Angles Worksheet Answer Key and Grading Rubric.
IV.
C.
Accommodations/modifications
D.
Enrichment
E.
Sample discussion questions
 Why is it important to know how to measure angles?
 What occupations do you think utilize the measurement of angles?
TAKS Preparation
A.
Transition to TAKS context
The teacher will lead the students in a discussion of how angle measurement problems may look in test
format by placing the TAKS questions below on the board/overhead.
B.
Sample TAKS questions
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District
V.
Key Vocabulary
Protractor, Angle Measurement, Vertex
VI.
Resources
A.
Textbook
Math Advantage ~ Middle School I
Chapter 8: Geometric Figures
 Angles, pp. 164-165




B.
Supplementary materials
Protractor Worksheet
Measuring Angles Practice Worksheet
Measuring Angles Worksheet
Measuring Angles Worksheet Answer Key and Grading Rubric
C.
Technology
Students may be taken to the computer lab to utilize the MS Word Drawing Toolbar to create angles.
After a specific number of angles have been created, student can print. Students will then measure the
angles they have created.
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District
VII.
follow up activities
(reteaching, cross-curricular support, technology activities, next lesson in sequence, etc.)
This lesson should be taught before the Classify the Angles! Lesson Plan.
VIII.
Teacher Notes
If students are taken to the computer lab for the technology component of this lesson, they may also visit
a website for reinforcement. Have students go to
http://www.mathleague.com/help/geometry/angles.htm#degreesmeasuringangles
Students can explore this site and record at least five other things they learned about angles by visiting
this site.
 Division of Curriculum and Instruction  School Improvement Department  Texarkana Independent School District