My Padlet with numerous NT training slides
Number Talks Padlet
This site contains Number Talk resources and videos
Number Talk Professional Development
PLC Leadership
Another site with many NT resources
Number Talk resource moodle
See Number Talks in action here.
*As students work toward addition and subtraction fluency they may also use such mental math strategies as:
Counting on: 8 + 4 = □ (8 …9, 10,11,12)
Counting back: 12 – 4 = □ (12…11, 10, 9, 8)
Making tens: 5 + 7 = □ (5 = 2 + 3 so 3 + 7 = 10 therefore 10 + 2 = 12)
Doubles: 6 + 6 = □
Doubles plus/minus one: 6 + 7 = □ (6 + 6 + 1 or 7 + 7 – 1)
Decomposing a number leading to a ten: 15 – 7 = □, so 15 – 5 = 10, therefore 10 – 2 = 8)
Working knowledge of fact families/related facts: 3 + 9 = 12 so 12 – 9 = □
Doubles (2 x 2 = 2 + 2)
Double and double again (4 x 2 = (2 x 2) x 2)
Halve, then double (6 x 8 = (3 x 8) + (3 x 8))
Doubles plus one more set (3 x 7 = (2 x 7) + 7)
Add one more set (6 x 7 = (5 x 7) + 7)
Decomposing into known facts (i.e., use facts you know to solve the ones you don’t)
Halves (12 ÷ 2 = 6)
Multiplying by zero and one
Patterns in 9’s
Fact families
Number bonds
As they work toward fluency in multiplication and division they may use such mental strategies as:
Other experiences include gaining a firm understanding of place value and the properties of operations. These understandings are particularly important when students begin working with multi-digit numbers in any of the four operations.
*Excerpt taken from http://utahelementarymath.wordpress.com/
Training
Sherry Parrish - Building Numerical Reasoning
Kindergarten
5 and 10 Frames for the Number 4
5 and 10 frames for the Number 5
10 Frames for the Number 6
Rekenreks
First Grade
Dot cards
More Dot card resources
10 Frame
Second Grade
doubles near doubles
adding up in chunks
place value
compensation
landmark or friendly numbers addition
making tens
removal
Third -Fifth Grade
strategies from prior grades
Partial Quotients
Multiplying Up
double halve multiplication
landmark for multiplication
Online Rekenrek
Teaching Channel (includes videos)
Locust Grove (many resources by grade level)
Book Study