enVision Mathematics Topic 13
2nd Grade; April (2 weeks); 3rd Trimester
Embedded Files
Topic Title(s):
Shapes and Their Attributes
Prepared Graduates:
MP2. Reason abstractly and quantitatively.
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):
2.G.A. Geometry: Reason with shapes and their attributes.
Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. (Sizes are compared directly or visually, not compared by measuring.) Identify triangles, quadrilaterals, pentagons, hexagons, and cubes. (CCSS: 2.G.A.1)
Partition a rectangle into rows and columns of same-size squares and count to find the total number of them. (CCSS: 2.G.A.2)
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. (CCSS: 2.G.A.3)
Demonstrate flexibility, imagination, and inventiveness in drawing shapes having specified attributes and in partitioning circles and rectangles into equal shares. (Entrepreneurial Skills: Risk Taking)
Explore various ways of partitioning shapes into equal shares, such as different methods for dividing a square into fourths, to understand that each partition, regardless of shape, represents an equal share of the square. (MP2)
Engage in spatial structuring by tiling rectangles with rows and columns of squares to build understanding of two-dimensional regions. (MP7)
Inquiry Questions
How many different triangles can you draw where two of the sides have the same length?
(Given a rectangle) Can you divide this rectangle into three equal parts in more than one way?
Coherence Connections
This expectation is in addition to the major work of Grade 2.
In Grade 1, students reason with shapes and their attributes, distinguish between defining and non-defining attributes, compose two-dimensional shapes, and partition circles and rectangles into halves and fourths.
In Grade 3, students develop understanding of fractions as numbers, use concepts of area and relate area to multiplication and to addition, and understand that shared attributes in different categories of shapes can define a larger category.
Academic Vocabulary & Language Expectations:
Vertices, quadrilaterals, pentagons, hexagons, polygon, angle, right angle, cube, face, edge, equal shares, halves, thirds, fourths
Assessments:
Instructional Resources & Notes:
enVision Mathematics Topic 13
Additional enVision Mathematics Resources
Let's Investigate! Let's Share! (TE) (supports Lessons 13-6, 13-7)
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 is in addition to the major work of the grade
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