enVision Mathematics Topic 15
3rd Grade; April (2 weeks); 3rd Trimester
Embedded Files
Topic Title(s):
Attributes of Two-Dimensional Shapes
Prepared Graduates:
MP2. Reason abstractly and quantitatively.
MP3. Construct viable arguments and critique the reasoning of others.
MP7. Look for and make use of structure.
Standard(s):
4. Geometry
The highlighted evidence outcomes are the priority for all students, serving as the essential concepts and skills. It is recommended that the remaining evidence outcomes listed be addressed as time allows, representing the full breadth of the curriculum.
Students Can (Evidence Outcomes):
3.G.A. Geometry: Reason with shapes and their attributes.
Explain that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories. (CCSS: 3.G.A.1)
Work with others to name and categorize shapes. (Civic/Interpersonal Skills: Collaboration/Teamwork)
Analyze, compare, and use the properties of geometric shapes to classify them into abstracted categories and describe the similarities and differences between those categories. (MP2)
Convince others or critique their reasoning when deciding if a shape belongs to certain categories of polygons. (MP3)
Inquiry Questions
Can you draw a quadrilateral that is not a rhombus, rectangle, or square?
Coherence Connections
This expectation supports the major work of the grade.
In Grade 2, students reason with shapes and their attributes.
In Grade 4, students draw and identify lines and angles and also classify shapes by properties of their lines and angles.
Academic Vocabulary & Language Expectations:
Polygon, side, quadrilateral, angle, vertex, trapezoid, parallel sides, parallelogram, rectangle, right angle, rhombus, square, convex, concave
Assessments:
Instructional Resources & Notes:
enVision Mathematics Topic 15
Additional enVision Mathematics Resources
Let's Investigate! Shape Mobiles (TE) (supports Lessons 15-3, 15-4)
Additional Math Games: Geometry (additional materials and preparation may be required)
Tier 1 Intervention & Supports (i-Ready Tools for Instruction):
Tier 1 Intervention: None since this Unit Plan supports the major work of the grade
Coherence Map/Concept Progressions: 3.G.A.1
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