Curriculum / Math / 4th Grade / Unit 8: Shapes and Angles / Lesson 11
Math
Unit 8
4th Grade
Lesson 11 of 18
Jump To
Lesson Notes
There was an error generating your document. Please refresh the page and try again.
Generating your document. This may take a few seconds.
Are you sure you want to delete this note? This action cannot be undone.
Solve problems involving the measure of two adjacent angles.
The core standards covered in this lesson
4.MD.C.7 — Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
The foundational standards covered in this lesson
1.OA.D.8 — Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6 + 6 = _.
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
25-30 minutes
a. Take a square piece of paper and fold it along the diagonal. What is the measure of each of the angles created by the fold at each corner? What is the measure of the angle of the whole corner?
b. Take another square piece of paper and fold it so that there is a crease from one corner to another point on an opposite side that is not the diagonal corner.
Upgrade to Fishtank Plus to view Sample Response.
Grade 4 Mathematics > Module 4 > Topic C > Lesson 10 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..
a. In the figure below, $$\angle ABC$$ measures 60°.
In the figure above, draw an angle that measures 25°. It should have the same vertex and share side $$\overrightarrow{AB}$$.
b. How many angles are there in the figure you drew in Part (a)? What are their measures?
c. Below is a copy of $$\angle ABC$$. Draw a different angle that measures 25° and has the same vertex and also shares side $$\overrightarrow{AB}$$.
d. How many angles are there in the figure you drew in Part (c)? What are their measures?
Measuring Angles, accessed on March 7, 2018, 1:52 p.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.
In the figure, $$ABCD $$ is a rectangle and $$B$$, $$E$$, and $$C$$ lie on a line.
a. $$\angle BAE=37^{\circ}$$ Find $$\angle EAD$$.
b. $$\angle BEA=53^\circ$$. Find $$\angle AEC$$.
Finding an Unknown Angle, accessed on Feb. 20, 2019, 12:40 p.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.
15-20 minutes
Problem Set
A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
5-10 minutes
$${\angle ADC}$$ is a right angle.
a. Which of the following equations can be used to find the measure of $$\angle ADB$$?
a. $${34+z=90}$$
b. $${z-34=90}$$
c. $${34\times z=90}$$
d. $${90\div34=z}$$
b. What is the measure, in degrees, of $${{\angle ADB}}$$?
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
Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.
Next
Solve problems involving the measure of more than two adjacent angles.
Topic A: Lines and Angles
Identify and draw points, lines, line segments, rays, and angles.
Standards
4.G.A.14.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.54.MD.C.6
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.
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
Measure and sketch angles that are greater than 180°.
4.MD.C.54.MD.C.64.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.14.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
We've got you covered with rigorous, relevant, and adaptable math lesson plans for free