Curriculum
Using Model-Based Representation to Improve
Addition and Subtraction Problem Solving in the First Grade
Kristen King
Unit Title Author
KEY LEARNING, ENDURING UNDERSTANDING, ETC.
Word problems can be solved by first identifying the problem as a joining or separating problem, then representing the problem, and lastly, solving for the unknown.
ESSENTIAL QUESTION(S) for the UNIT
How can I identify a problem as a joining or separating problem?
How can I represent word problems?
How do I solve for start, change, and result unknown joining or separating problems?
CONCEPT A CONCEPT B CONCEPT C
Once a problem has been represented, it should be solved for the unknown (which may be the start, change, or result).
Once identified as either joining or separating problems word problems should be represented.
Word problems must first be identified as either joining or separating problems.
ESSENTIAL QUESTIONS A ESSENTIAL QUESTIONS B ESSENTIAL QUESTIONS C
*What is a joining problem?
*What is a separating problem? *How do I identify a word problem as joining or separating?
How do I solve for an unknown in an addition or subtraction equation?
How do I represent a word problem?
VOCABULARY A VOCABULARY B VOCABULARY C
Start Unknown
Change Unknown
Result Unknown
Math Mountains
Circle Drawings
Pictures
Equations
Joining Problem
Separating Problem
ADDITIONAL INFORMATION/MATERIAL/TEXT/FILM/RESOURCES
See unit appendices, for all unit equations, pre- and post- assessments, handouts, and exit tickets.
Will need access to chart paper, markers, and dry-erase board.
N