4.MD.A.1: Sizes of units in one system (1 ft = 12 in, 1 h = 60 min) and conversion tables

Know relative sizes of measurement units within one system of units, including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 4.

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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 Grade 4 standards in Measurement and Data

• 4.MD.A.2Word problems with distances and time intervals
• 4.MD.A.3Area and perimeter of rectangles in real problems, including a missing side
• 4.MD.B.4Line plots in halves, quarters and eighths; add and take away the fractions on them
• 4.MD.C.5An angle is a turn: 360 one-degree turns make a full circle
• 4.MD.C.6Read and make angles with a protractor
• 4.MD.C.7Angles add: find the whole or the missing part

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.