Math Station #2: Sort by Two Attributes

Skill/Content and Objective:

Materials:

"Sorting objects by two attributes lays the foundation for types of classification that will be useful in recognizing and describing complex algebraic patterns." (ETA/ Cuisenaire, 94).

1. Have children examine their sets of blocks. Ask them to examine how the blocks in their set are alike and how they are different. Guide children to the conclusion that the blocks are all the same shape, but they are two different colors and sizes.

2. Set out the sorting circles in rows of two - two circles on top, two on the bottom. Sort the red shapes in the first circle in the top row and the blue shapes in the first circle in the bottom row. Ask children how the blocks in each circle are different now (they are two different sizes).

3. Have children sort all of the large shapes and move them them to the second circle in each row. (There should be two sorting circles with small shapes, and two sorting circles with larger shapes, sorted by color).

Differentiation Suggestions:

b) explain thickness as another attribute (for more advanced students). If they choose to sort by thickness, they can move thin shapes to the left of each sorting circle and thick shapes to the right of each sorting circle.

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 94 and 95.

Skill/Content and Objective:

- Sort groups of objects by two attributes
- Sort, classify, and compare

Materials:

- Attribute Blocks or Pattern Shapes (2 sizes of red and blue blocks of one shape only)
- Additional materials for sorting (small plastic animals, foam shapes, pom poms)
- Four sorting circles
- Recording sheets
- Markers and/or crayons and/or colored pencils

"Sorting objects by two attributes lays the foundation for types of classification that will be useful in recognizing and describing complex algebraic patterns." (ETA/ Cuisenaire, 94).

1. Have children examine their sets of blocks. Ask them to examine how the blocks in their set are alike and how they are different. Guide children to the conclusion that the blocks are all the same shape, but they are two different colors and sizes.

2. Set out the sorting circles in rows of two - two circles on top, two on the bottom. Sort the red shapes in the first circle in the top row and the blue shapes in the first circle in the bottom row. Ask children how the blocks in each circle are different now (they are two different sizes).

3. Have children sort all of the large shapes and move them them to the second circle in each row. (There should be two sorting circles with small shapes, and two sorting circles with larger shapes, sorted by color).

Differentiation Suggestions:

- If children are confused by the different thicknesses of the blocks, either:

b) explain thickness as another attribute (for more advanced students). If they choose to sort by thickness, they can move thin shapes to the left of each sorting circle and thick shapes to the right of each sorting circle.

- Use additional materials to sort by two attributes.
- For advanced students, see if they are able to sort by three attributes.

Assessment: Formative:

- I Can/ 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 94 and 95.

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