Math g4 m4 Topic A Overview
Math g4 m4 Topic A Overview
Math g4 m4 Topic A Overview
4
GRADE
Mathematics Curriculum
GRADE 4 • MODULE 4
Topic A
Lines and Angles
4.G.1
Focus Standard: 4.G.1 Draw points, lines, line segments, rays, angles (right, acute, obtuse), and
perpendicular and parallel lines. Identify these in two-dimensional figures.
Instructional Days: 4
Coherence -Links G2–M8 Time, Shapes, and Fractions as Equal Parts of Shapes
from: G3–M7 Geometry and Measurement Word Problems
-Links to: G5–M5 Addition and Multiplication with Volume and Area
Topic A begins with students drawing points, lines, line segments, and rays and identifying these in various
contexts and familiar figures. As they continue, students recognize that two rays sharing a common endpoint
form an angle. In Lesson 2, students create right angles through a paper-folding activity and identify right
angles in their environment by comparison with the right angles they have made. They also draw acute, right,
and obtuse angles. This represents students’ first experience with angle comparison and the idea that one
angle’s measure can be greater (obtuse) or less (acute) than that of a right angle.
Next, students use their understanding of angles to explore relationships between pairs of lines, defining and
recognizing intersecting, perpendicular, and parallel lines. In Lesson 3, students’ knowledge of right angles
leads them to identify, define, and construct perpendicular lines. In Lesson 4, students learn lines that never
intersect are also called parallel and have a special relationship. Students use, in conjunction with a
straightedge, the right-angle templates that they created in Lesson 2 to construct parallel lines (4.G.1).
Activities using different grids provide students with the opportunity to explore the concepts of
perpendicularity and parallelism.
This work is derived from Eureka Math ™ and licensed by Great Minds. ©2015 -Great Minds. eureka This work is licensed under a
math.org This file derived from G4-M4-TE-1.3.0-06.2015 Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
NYS COMMON CORE MATHEMATICS CURRICULUM Topic A 4•4
Objective 2: Use right angles to determine whether angles are equal to, greater than, or less than
right angles. Draw right, obtuse, and acute angles.
(Lesson 2)
This work is derived from Eureka Math ™ and licensed by Great Minds. ©2015 -Great Minds. eureka This work is licensed under a
math.org This file derived from G4-M4-TE-1.3.0-06.2015 Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.