7.EE.A.2 Grade 7 · Expressions and EquationsUnderstand that rewriting an expression in different forms in a problem context can shed light on the problem and how the quantities in it are related.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 7.
Play the game: Letters for Numbersfree, no sign-up →Letters stand for quantities you can still picture. A balance stays level, a function machine shows what it did, and doubling grows as a shape you can watch.
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.
7.EE.A.1Expand, factor, add and subtract expressions on an area model7.EE.B.3Multi-step real-life problems with fractions, decimals, money and percents: estimate, then exact7.EE.B.4Solve px + q = r, p(x + q) = r and px + q > r, and graph the inequalityColorMyMath · 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.