K.MD.B.3: Sort objects into groups, count each group, and order the groups by how many

Classify objects into given categories; count the numbers of objects in each category (up to and including 10) and sort the categories by count.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Kindergarten.

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How ColorMyMath teaches it

Lengths, areas and volumes are built from the same dots, one more direction each time. Measuring means laying real units end to end with no gaps.

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.

More Kindergarten standards in Measurement and Data

• K.MD.A.1What you can measure on one thing: how long, how heavy, how much it holds
• K.MD.A.2Compare two objects by length: which is longer or shorter, and by how much

ColorMyMath · 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.