K.CC.B.4 Kindergarten · Counting and CardinalityUnderstand the relationship between numbers and quantities; connect counting to cardinality.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Kindergarten.
Play the game: One More, One LessStep 1 of the ColorMyMath curriculum · free, no sign-up →A number is a quantity you can see: that many colored dots, one fixed color per digit, and a ten is ten dots in a triangle. Counting here is counting things that are really there, up and back down in the same round.
Every page is free and open — nothing to install, no account, and it works on a phone or a classroom board. Every number has its own color: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 purple, 7 brown, 8 pink, 9 cyan, and a number is that many colored dots.
Step 1Adding 1 up to 5: counting to 5Step 2Subtracting 1 from 5 to 0: counting back from 5Step 4Adding 1: counting to 10Step 6Subtracting 1: counting back from 10K.CC.A.1Count to 100 by ones and by tensK.CC.A.2Count forward from any given number, not just from 1K.CC.A.3Write numbers 0 to 20K.CC.B.5Count to answer 'how many?' up to 20K.CC.B.6Tell whether one group is greater than, less than or equal to anotherK.CC.B.7Compare two written numbers between 1 and 10ColorMyMath · getridoftheteacher.com · every number has its own color, and a number is that many colored dots. Matching a game to a standard is a judgement call; the official text is at doe.mass.edu.