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Number Talks

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by

Kristy Reese

on 28 July 2016

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Transcript of Number Talks

Number Talks
Opportunities for students to:
reason about numbers and justify their thinking
gain an understanding of what numbers mean
apply and discuss computation strategies through shared experiences (whole or small group setting)
What are Number Talks?
Students will:
clarify their own thinking
consider and test other strategies
investigate & apply mathematical relationships
build a repertoire of efficient strategies
make decisions about choosing strategies for specific problems
What are the benefits of sharing and discussing computation strategies?
Create a risk-free classroom environment where students feel comfortable offering responses and questioning themselves & peers.
Encourage students to use mental math to build on number relationships rather than memorized procedures.
What are the key components
of NUMBER TALKS?
10 to 15 min. daily classroom discussions
What is the teacher's role in the NUMBER TALK?
determines the purpose and operation for the discussion
writes the problem on the board (horizontally to encourage students to think about numbers as whole quantities instead of discrete columns)
gives time for students to solve the equations mentally
records all answers
acts as facilitator, questioner, & listener
discusses examples and questions students on how they arrived at their answer
What is the students' role in the number talk?
mentally solve equations accurately (correctly), efficiently (choose an appropriate strategy), and flexibly (use number relationships with ease in computation)
place their thumb on their chest when they are ready
add additional fingers for each solution found
Procedures & Expectations
Select a designated location that allows you to maintain close proximity to your students for informal observations and interactions.
Provide appropriate wait time for the majority of the students to access the problem.
Accept, respect, & consider all answers (wrong answers may be rooted in misconceptions).
Encourage student communication throughout the number talk.
Goals of K-2
developing number sense
developing fluency with small numbers
subitizing numbers
making tens
Goals of 3-5
number sense
place value
fluency
properties
connecting mathematical ideas
counting on
counting all
doubles/near doubles
making tens
making landmark numbers
compensation
breaking each number
into its place value
adding up/adding on
counting back
keeping a constant
difference
adjusting one number to
create an easier problem
repeated addition
skip counting
partial products
doubling and halving
breaking factors into
smaller factors
repeated subtraction
multiplying up
partial quotients
proportional reasoning
How are
NUMBER TALKS
organized?
Kindergarten uses dot images, rekenreks, and five & ten frames to build build fluency.
All other number talks are organized by operations and strategies.
1st- addition
2nd- addition & subtraction
3rd, 4th, & 5th- addition, subtraction, multiplication,
& division
GSE-Standards for Mathematical Practice
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
Full transcript