Math Station #3: Determine the Sorting Rule

Skill/ Content and Objective:

Materials:

Description:

"Children need to be familiar with sorting by color, shape, and size in order to determine the sorting rule for a group of objects that has already been sorted. Determining a sorting rule involves becoming aware of a pattern. This can be done by comparing groups and recognizing how objects are similar and different. Algebraic thinking and logical reasoning are developed as children work to develop a sorting rule. These skills are at the foundation of understanding algebraic functions." (ETA/ Cuisenaire, 96).

1. Set up two sorting circles and sort objects by shape. Have children finish this sentence: The blocks have been sorted by [shape]. Circle one has [shapes] and circle two has [shapes].

2. Repeat Step 1 with two new shapes. Have children finish this sentence: The blocks have been sorted by [shape]. Circle one has [shapes] and circle two has [shapes].

3. Repeat Step 1 to show two groups sorted by color. Have children finish this sentence: The blocks have been sorted by [attribute].

4. Repeat Step 1 to show two groups sorted by size. Have children finish this sentence: The blocks have been sorted by [attribute].

5. Repeat Step 1 to see if there are other attributes they can sort by. Have children finish this sentence: I can also sort by ___________. (examples: shapes that have three sides, shapes that have four sides, shapes that are thick, shapes that are thin).

Differentiation Suggestions:

Assessment: Formative:

Reference:

ETA/ Cuisenaire. (2006). Hands-On Standards, Deluxe Edition: The First Source for Introducing Math Manipulatives (PreK - K). Vernon Hills, Illinois: ETA Cuisenaire. Pages 96 and 97.

Skill/ Content and Objective:

- Determine the sorting rule for sorted groups of objects
- Sort, classify, and compare

Materials:

- Attribute blocks (an assortment of sizes, shapes, and colors for each group)
- Two sorting circles
- Recording sheets
- Markers and/or crayons and/or colored pencils

Description:

"Children need to be familiar with sorting by color, shape, and size in order to determine the sorting rule for a group of objects that has already been sorted. Determining a sorting rule involves becoming aware of a pattern. This can be done by comparing groups and recognizing how objects are similar and different. Algebraic thinking and logical reasoning are developed as children work to develop a sorting rule. These skills are at the foundation of understanding algebraic functions." (ETA/ Cuisenaire, 96).

1. Set up two sorting circles and sort objects by shape. Have children finish this sentence: The blocks have been sorted by [shape]. Circle one has [shapes] and circle two has [shapes].

2. Repeat Step 1 with two new shapes. Have children finish this sentence: The blocks have been sorted by [shape]. Circle one has [shapes] and circle two has [shapes].

3. Repeat Step 1 to show two groups sorted by color. Have children finish this sentence: The blocks have been sorted by [attribute].

4. Repeat Step 1 to show two groups sorted by size. Have children finish this sentence: The blocks have been sorted by [attribute].

5. Repeat Step 1 to see if there are other attributes they can sort by. Have children finish this sentence: I can also sort by ___________. (examples: shapes that have three sides, shapes that have four sides, shapes that are thick, shapes that are thin).

Differentiation Suggestions:

- For children having difficulty with this station, provide them with presorted shapes and have them determine the rule.
- You can also conduct this station using bear counters or pom poms of various colors and sizes if children find these less intimidating to work with than geometric shapes.

Assessment: Formative:

- I Can list/ recording sheet:

Reference:

ETA/ Cuisenaire. (2006). Hands-On Standards, Deluxe Edition: The First Source for Introducing Math Manipulatives (PreK - K). Vernon Hills, Illinois: ETA Cuisenaire. Pages 96 and 97.

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