• # Adult Learning Activity Sorting & Sorting Again

## ◉ To do this activity, you need to find 8 to 10 small objects.    ◉ You will need to touch and move the objects, so don’t choose anything that might break.

↓ For each slide, please press play for audio

• # Adult Learning Activity Sorting & Sorting Again

How could we sort this collection?
Take a few minutes to write down some ways you can think of.

• # Adult Learning Activity Sorting & Sorting Again

We could sort by using a yes/no question…

How could we re-sort this collection?

• # Adult Learning Activity Sorting & Sorting Again

We could sort by considering the function of the objects…

How could we re-sort this collection?

• # Adult Learning Activity Sorting & Sorting Again

We could sort by looking at the shape of the objects…

• # Adult Learning Activity Sorting & Sorting Again

## We could sort by looking at the color of the objects…

Can you think of other ways to re-sort this collection?

• # Big Ideas of Sets

## Examples

Sets and Sorting

Attributes can be used to sort collections into sets.

The same collection can be sorted in different ways.

Sets can be compared and ordered.

Color, size, shape, type of object, etc.

Red bears vs. blue bears; big bears vs. little bears

There are more red bears than blue bears. (compare); small bears, medium bears, large bears (order)

© Erikson Institute’s Early Math Collaborative. Reprinted from Big Ideas of Early Mathematics: What Teachers of Young Children Need to Know (2014), Pearson Education.

• # Development of Thinking about Sets & Sorting

By age 4, children can sort objects according to a given attribute and form categories.

They may switch attributes during open sorting.

By age 6, children can independently sort by a single attribute and re-classify by different attributes.

Children aged 5, 6 & 7 are still building their understanding of overlapping sets and hierarchical categories.

• # Video Analysis: People Sort

What evidence do you see of the children’s thinking?
children label attributes
children define attributes
children make sets

What evidence do you see of the teacher’s thinking?
teacher does activity with small group of children
teacher focuses children on observable attributes
teacher labels the set created

How might this experience connect to other math?
builds understanding of the concept of attribute, which is key to all areas of mathematics.

• # Attribute: A key concept in all areas of mathematics

 Number & Operations ◉ What kind of thing are we counting? ◉ What is the unit? What is the set? ◉ Number is an attribute of a set. ◉ Subitizing is seeing small sets. Geometry ◉ What kind of shape is it? ◉ We use shape as an attribute to sort. ◉ We define shapes by their attributes. Measurement ◉ What kind of big is it? ◉ We use size as an attribute to sort. ◉ Each type of measurement corresponds to a particular attribute. Data Analysis ◉ What kind of question are we trying to answer? ◉ We collect & analyze data by classifying, sorting & making sets.

• # Stop and Jot

## Read (or review) chapter 1, “sets,” in the Big Ideas book before making plans about sharing this content with others.

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