6.EE.A.4 Grade 6 · Expressions and EquationsIdentify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them).Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 6.
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.
6.EE.A.1Whole-number exponents (5 squared, 2 to the 10th)6.EE.A.2Letters stand for numbers: write, evaluate and name the parts of 2n + 36.EE.A.3Use the distributive property to write equivalent expressions6.EE.B.5Which values from a set make an equation or inequality true: test each one6.EE.B.6Write an expression for a story; say what the letter stands for6.EE.B.7Solve x + p = q and px = q on a balance scale6.EE.B.8Write x > c or x < c; infinitely many answers, drawn on a number line6.EE.C.9Two quantities that change together: table, graph and d = 65tColorMyMath · 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.