Number Talks PowerPoint
Download
Report
Transcript Number Talks PowerPoint
Helping Children
Build Mental Math
and Computation
Strategies
What are
Classroom conversations around
purposefully crafted computation
problems that are solved mentally.
The problems in a number talk are
designed to elicit specific strategies
that focus on number relationships.
Students solve problems accurately,
efficiently, and flexibly.
Can be conducted in 5-15 minutes.
?
Key Components of Number
Talks
Classroom environment and community
Classroom discussions
The teacher’s role
The role of mental math
Purposeful computation problems
Classroom Environment and
Community
Acceptance
Benefits of Sharing and
Discussing Computation
Strategies
Students clarify their own thinking
Students consider and test other strategies
to see if they are mathematically logical
Students investigate and apply mathematical
relationships
Students build a repertoire of efficient
strategies
Students make decisions about choosing
efficient strategies for specific problems.
The Teacher’s Role
The Role of
Encourages students to build on number
relationships to solve problems instead of
relying on memorized procedures
Help strengthen students understanding
about place value because they are forced to
look at numbers as whole quantities instead of
discrete columns of digits
Purposeful Computation
Problems
Select problems that guide students to focus
on mathematical relationships
Requires careful planning to design just the
right problems for the students
8+2
8+2+3
8+5+2
8+4+2+6
20+20
19+19
19+21
19+17
Procedures and Expectations
Essential to Number Talks
Four Goals for K-2 Number
Talks
Developing number sense
Developing fluency with small numbers
Subitizing
Making Tens
Fluency Number Talks Using Dot Images
Fluency Number Talks Using Rekenreks
Fluency Number Talks Using Five and Ten
Frames
Continue to use dot plates, rekenreks, and ten
frames. Record equations to match students
thinking.
Counting all/Counting on
Making Tens
Doubles/Near Doubles
Landmark or Friendly Numbers
Counting all/Counting on are entry-level
strategies for addition. For this reason if
students share this method as their strategy,
honor their thinking but make connections to
more efficient strategies.
Making Tens
Doubles/Near Doubles
Landmark or Friendly Numbers
Breaking Each Number into its Place Value
Compensation
Adding Up in Chunks
Removal