Strand: GEOMETRY (1.G.)

Reason with shapes and their attributes (Standards 1–3).

Standard 1.G.1

Distinguish between defining attributes (for example, triangles are closed and three-sided) versus non-defining attributes (for example, color, orientation, overall size); build and draw shapes that possess defining attributes.

• Grade 1 Mathematics Module 5: Identifying, Composing, and Partitioning Shapes (EngageNY)
In Module 5, students consider part-whole relationships through a geometric lens. The module opens with students identifying the defining parts, or attributes, of two- and three-dimensional shapes, building on their kindergarten experiences of sorting, analyzing, comparing, and creating various two- and three-dimensional shapes and objects. Students combine shapes to create a new whole: a composite shape. They also relate geometric figures to equal parts and name the parts as halves and fourths. The module closes with students applying their understanding of halves to tell time to the hour and half hour.
• IXL Game: Same Shape
This IXL game helps first graders distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size). This is just one of many online games that supports the Utah Math core. Note: The IXL site requires subscription for unlimited use.
• Only some
The purpose of this task is for students to discuss and come to understand what constitute defining attributes for triangles, squares, and rectangles. Students start by looking for attributes shared by all the instances of a particular shape.
• Shape Sort
The purpose of this task is to familiarize students with the idea of defining and non-defining attributes of geometric figures by using a collection of real objects or a set of cards with pictures of objects.
• USBE Core Guide for Domain: Geometry (1G1)
This math guide provides academic vocabulary, instructional strategies, teacher resources, and assessment tasks for the Geometry domain.

http://www.uen.org - in partnership with Utah State Board of Education (USBE) and Utah System of Higher Education (USHE).  Send questions or comments to USBE Specialist - Shannon Ference and see the Mathematics - Elementary website. For general questions about Utah's Core Standards contact the Director - DIANA SUDDRETH .
Email:  diana.suddreth@schools.utah.gov

These materials have been produced by and for the teachers of the State of Utah. Copies of these materials may be freely reproduced for teacher and classroom use. When distributing these materials, credit should be given to Utah State Board of Education. These materials may not be published, in whole or part, or in any other format, without the written permission of the Utah State Board of Education, 250 East 500 South, PO Box 144200, Salt Lake City, Utah 84114-4200.