Collaborating Teachers

K- Session 1September 3, 2013

Jodi Weisbart’s K-1 Classroom

• Task 1: Give the children various bags of objects and ask them to make signs for their bags to show how many objects they had.

From Young Mathematicians at Work: Constructing Number Sense, Addition, and Subtraction, Catherine Twomey Fosnot & Maarten Dolk, Heinemann, 2001

Task 1

Big Ideas

Some big ideas children must construct to help them comprehend quantity are:

• One-to-one correspondence• Cardinality• Hierarchical inclusion• Compensation• Part-whole relationships• Fosnot & Dolk, Young Mathematics at Work: Constructing Number Sense,

Addition & Subtraction

Jodi Weisbart’s K-1 Classroom

• Task 2: Make a sign for the door of the classroom so visitors and the principal would know how many children were in the classroom.

From Young Mathematicians at Work: Constructing Number Sense, Addition, and Subtraction, Catherine Twomey Fosnot & Maarten Dolk, Heinemann, 2001

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