Curriculum / Math / 4th Grade / Unit 8: Shapes and Angles / Lesson 6
Math
Unit 8
4th Grade
Lesson 6 of 18
Jump To
Understand that an angle that turns through $${{1\over360}}$$ of a circle is called a “one-degree angle” and can be used to measure angles. Use a makeshift protractor to measure benchmark angles.
The core standards covered in this lesson
4.MD.C.5 — Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:
4.MD.C.6 — Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
The essential concepts students need to demonstrate or understand to achieve the lesson objective
Suggestions for teachers to help them teach this lesson
Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress.
Tasks designed to teach criteria for success of the lesson, and guidance to help draw out student understanding
How many degrees has the ray turned from where it started?
Grade 4 Unit 7 Lesson 8 Activity 1, accessed on Oct. 13, 2023, 3:24 a.m., is licensed by Illustrative Mathematics under either the CC BY 4.0 or CC BY-NC-SA 4.0. For further information, contact Illustrative Mathematics.
Using the makeshift protractors you made in Anchor Task #2, find the measure, in degrees, of each of the following angles. If an angle can’t be measured precisely with either protractor, make an estimate.
Problem Set
Unlock the answer keys for this lesson's problem set and extra practice problems to save time and support student learning.
A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
What fraction of a complete turn through a circle is 1°?
What is the measure, in degrees, of a right angle?
List the measurements, in degrees, of three benchmark angles.
An example response to the Target Task at the level of detail expected of the students.
The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.
Extra Practice Problems
Answer keys for Problem Sets and Extra Practice Problems are available with a Fishtank Plus subscription.
Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.
Lesson 5
Lesson 7
Topic A: Lines and Angles
Identify and draw points, lines, line segments, rays, and angles.
4.G.A.1 4.MD.C.5
Identify and draw right, obtuse, and acute angles.
4.G.A.1
Identify and draw perpendicular lines.
Identify and draw parallel lines.
Create a free account to access thousands of lesson plans.
Already have an account? Sign In
Topic B: Measures of Angles
Use iteration with one physical nonstandard unit to measure benchmark angles.
4.MD.C.5 4.MD.C.6
Measure angles that are less than 180° using a 180° protractor. Distinguish angle measure from other attributes.
Sketch angles of specified measure using a 180° protractor.
Identify and measure angles as turns and recognize them in various contexts.
Topic C: Measures of Adjacent Angles
Decompose angles using pattern blocks.
4.MD.C.7
Solve problems involving the measure of two adjacent angles.
Solve problems involving the measure of more than two adjacent angles.
Measure and sketch angles that are greater than 180°.
4.MD.C.5 4.MD.C.6 4.MD.C.7
Topic D: Shapes and Lines of Symmetry
Analyze and classify triangles based on side length, angle measure, or both.
4.G.A.1 4.G.A.2
Draw triangles from given criteria.
Analyze and classify quadrilaterals based on parallel and perpendicular lines and the presence or absence of angles of a specified size.
Draw quadrilaterals from given criteria.
Identify and draw lines of symmetry in two-dimensional figures.
4.G.A.3
See all of the features of Fishtank in action and begin the conversation about adoption.
Learn more about Fishtank Learning School Adoption.
Yes
No
Access rigorous, relevant, and adaptable math lesson plans for free