K.CC.A.2 Kindergarten · Counting and CardinalityCount forward beginning from a given number within the known sequence (instead of having to begin at one).Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Kindergarten.
Play the game: Count On, Count BackStep 9 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 9Adding 1: counting to 15Step 13Adding 1: counting to 20Step 16Adding 1: counting to 25Step 21Adding 1: counting to 30K.CC.A.1Count to 100 by ones and by tensK.CC.A.3Write numbers 0 to 20K.CC.B.4Numbers and quantities: one number per object, the last number said is how many, each next number is one moreK.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.