GRADE BAND: K–2
Domain: Counting and Cardinality, Number and
Operations in Base Ten
Why this domain is a priority for
professional development
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Foundational for measurement
Key standards in this domain that pd
should focus on
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(2.NBT.2 -> 2.NBT.5 ->2.NBT.6) + (1.NBT.4 >2.NBT.7) -> 2.NBT.9 (MP3) (Tasks 4 and 5 good
illustration.) Two threads, captured by critical areas
1 and 2. Moving towards fluency with 2-digit
numbersand problem solving with 3-digit numbers.
K.CC.4. Important to have a quantitative notion first
before you attach a symbol (K.CC.1–3)
K.NBT.1->1.NBT.2->2.NBT.2. (MP6) Moving towards
decomposing numbers into tens and ones. Often all
about position and columns with no value.
Existing resources that support these
domains and standards
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Essential understanding of Number and Numeration,
NCTM
Van der Walle
National Library of Digital Manipulatives
UCLA materials (two quarter sequence called
number power 1 and number power 2)
DMI
Teaching number in the classroom (Wright et al)
Domains and standards that are in
need of new resources
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K.CC.4. Language is new to some teachers
(“cardinality”).
K.NBT.1+1.NBT.2. Teachers might think they know
because “I already teach place value”, without
understanding the connection with quantities.
Building visual models for addition and subraction