Clarification ~ VSC 2.A.1.a ~ Mathematics Grade K ~ School Improvement in Maryland

Clarifications: Each clarification provides an explanation of the indicator/objective to help teachers better understand the concept. Classroom examples are often included to further illustrate the concept. While classroom examples could be shared with the students, the intended audience for the explanation/clarification is the classroom teacher-not the student. In addition, classroom examples may or may not reflect the assessment limits.

Standard 2.0 Knowledge of Geometry

Topic A. Plane Geometric Figures

Indicator 1. Recognize and describe the attributes of plane geometric figures

Objective a. Sort and regroup everyday objects and geometric figures according to attributes such as: shape, color, size

Clarification
When students re-sort by a different attribute, they are achieving a deeper understanding of sorting and attributes of objects. It is a more difficult task for students because they have to remember the previous attribute used to sort as well think about the new attribute that will be used to sort the same objects. Students have the understanding that the same group of objects has more than one attribute that set them apart from one other. Students benefit from sorting everyday objects (e.g., buttons, container lids, keys, shells), which relate directly to their lives. These experiences prepare children for sorting mathematics manipulatives such as sorting bears or attribute blocks. Sorting bears are manipulatives that can be purchased from most mathematics supply catalogs. A set contains: 3 sizes (small, medium, large) 5 colors (red, yellow, blue, purple, green) Attribute blocks are manipulatives that promote the development of vocabulary, mathematical reasoning, and problem-solving skills. These blocks can be purchased from any mathematics supply catalog. Most sets consist of 60 pieces in: 5 shapes (circle, triangle, rectangle, square, hexagon) 2 sizes (small, large) 2 thicknesses (thick, thin) 3 colors (red, yellow, blue)
/instruction/clarification/mathematics/gradeK/xml/2A1a.xml

Clarification

When students re-sort by a different attribute, they are achieving a deeper understanding of sorting and attributes of objects. It is a more difficult task for students because they have to remember the previous attribute used to sort as well think about the new attribute that will be used to sort the same objects. Students have the understanding that the same group of objects has more than one attribute that set them apart from one other.

Students benefit from sorting everyday objects (e.g., buttons, container lids, keys, shells), which relate directly to their lives. These experiences prepare children for sorting mathematics manipulatives such as sorting bears or attribute blocks.

Sorting bears are manipulatives that can be purchased from most mathematics supply catalogs. A set contains:

3 sizes (small, medium, large)
5 colors (red, yellow, blue, purple, green)

Attribute blocks are manipulatives that promote the development of vocabulary, mathematical reasoning, and problem-solving skills. These blocks can be purchased from any mathematics supply catalog. Most sets consist of 60 pieces in:

5 shapes (circle, triangle, rectangle, square, hexagon)
2 sizes (small, large)
2 thicknesses (thick, thin)
3 colors (red, yellow, blue)

/instruction/clarification/mathematics/gradeK/xml/2A1a.xml

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