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Counting objects to 20

PROCEDURAL
Mathematics›Counting & Cardinality|Ages 5—6|ID: mt_yqAL6O5i_v

Count a set of objects to answer 'how many?' for sets up to 20 (arranged in lines, arrays, circles, or scattered)

Mastery Evidence

  • Accurately count up to 20 objects in a line
  • Count up to 10 scattered objects without losing track
  • Given a number 1–20, count out that many objects from a larger set

Assessment Prompt

“If you spread out 15 buttons on the table in a random arrangement and ask [child] how many there are, can they count them all carefully and give you the right answer?”

Curriculum Standards1 alignment

K.CC.5Common Core State Standards for Mathematics
Count to Answer How Many

Count to answer “how many?” questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1–20, count out that many objects.

Counting and Cardinality

Prerequisites2

Show full prerequisite tree
  • How Many in Total? hard

    Answering 'how many?' requires the cardinality principle

    • One-to-one counting hard

      Cardinality principle builds on one-to-one correspondence — you must count correctly to know the last number tells 'how many'

  • One-to-one counting hard

    Counting objects to answer 'how many?' requires one-to-one correspondence

Unlocks3