bridge
Transforming Teacher Learning to Student Learning
Sue Lampkin - Mountain View, California - Kenneth E. Slater Elementary School
What first grade math teachers need to know

Addition and Subtraction
Problem Solving
Applying math knowledge to teaching practice

Sue's Problem Solving Unit
Other Teachers at Slater
Looking closely at student learning

Puzzling Teaching Situations
Clips and Work Samples
Faculty learning in collaboration

Professional Learning
Planning Together

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Sue Lampkin and Slater School

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Case Development:
The Carnegie Foundation for the Advancement of Teaching

 

Here is a basic problem to solve for an unknown part.

Thirty-five children are riding on the bus. Twenty of them are boys. How many girls are riding on the bus?

number models:
35 – 20 = ___
20 + ___ = 35

Total
35
Part
Part
20
?
It is equally important for students to learn how to solve part-whole problems that ask for more than two parts.

For example:
Thirty-seven people are riding on the bus. Twenty of them are boys. Two of them are adult chaperones. How many girls are riding on the bus?

number models:
37 – (20 +2) = ___
20 + 2 + ___ = 45

Total
37
Part
Part
 Part
20
?
2

 

 

 
June 5, 2006