Sorting Assessment (Disjoint Sets and Intersecting Sets)

Task 1

Sort the objects into groups.

Explain what you are doing.

Put yarn around the groups and explain how you decide to put the yarn.

Response

Sorts objects into groups according to one property for each object (all yellow, all blue… or squares, circles…). Uses the category of "other".

Sorts objects into groups according to two properties for one object (big squares, little squares…).

 

  

Task 2

Sort the objects another way?

Put yarn around two categories that are completely different

Response

Sorts objects into unique groups.

Sorts objects by one property (color).

Sorts objects by two properties (color and shape).

Sorts objects by three properties (color, shape, size).

 

Task 3

Form the yarn so that there are two circles that overlap.

Put an object in one of the circles.

Put another object into the other circle.

Can you find something that could fit in both circles.

If so, where would it go?

If not, can you change the groups so they could.

Response

Sorts objects into unique groups.

Identifies objects by using more than one property.

Sorts objects by using more than one property.

Sorts objects by using intersecting groups.

 

Tasks Summary

Can sort by one property

Can sort by two properties.

Can sort by three properties.

Can represent disjoint groups.

Can represent groups that intersect.

 

 

Dr. Robert Sweetland's Notes ©