Using a Circular Protractor
Videos to help Grade 4 students learn how to use a circular protractor to understand a 1-degree angle as
1/360 of a turn. Explore benchmark angles using the protractor.
Common Core Standards: 4.MD.5, 4.MD.6
Plans and Worksheets for Grade 4
Plans and Worksheets for all Grades
Lessons for Grade 4
Common Core For Grade 4
New York State Common Core Math Module 4, Grade 4, Lesson 5
NYS Math Module 4 Grade 4 Lesson 5 Application Problem
How many right angles can fit into a circle?
NYS Math Module 4 Grade 4 Lesson 5 Concept Development
Problem 1: Reason about the number of turns necessary to
make a full turn with different fractions of a full turn.
Problem 2: Use a circular protractor to determine that a quarter-turn or a right angle measures 90 degrees, a
half turn measures 180 degrees, a three quarter-turn measures 270 degrees, and a full rotation measures 360
Problem 3: Measure and draw benchmark angles with the
Lesson 5 Concept Development
We have a special name for 1/360 of a whole turn. It is called a degree. There are 360 degrees are in one whole turn?
A protractor is a tool that has been partitioned and marked off to show 360 degrees.
NYS Math Module 4 Grade 4 Lesson 5 Problem Set
Find the measures of the following angles using your circular protractor.