Kindergarten Task: The Seashell Collections

This is a Kindergarten Task called The Seashell Collections. This task is meant to use pictures to describe mathmatical practices. The seashell collections contain the same number of shells but are arranged in a line, a rectangular array, and a scattered configuration. Students should understand that the arrangement of the objects in a set does not affect the number of objects in the set. Students should also realize that another important part of counting accurately is being able to keep track of what has already been counted and what remains to be counted.

Activity/Task Variations

Blooms taxonomy level: 
Remembering
Differentiation suggestions: 

If students should have trouble understanding that all of the seashell collections contain the same number of shells, you might suggest that they cover the seashells with counters, using a different color for each girl. Students can then determine that the number of objects is the same by matching the counters with a one‐to‐one correspondence or rearranging the counters to make 3 identical sets with the same arrangement.