8.F.A.1 Grade 8 · FunctionsUnderstand that a function is a rule that assigns to each input exactly one output.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 8.
Play the game: Function Machinefree, no sign-up →A function is a machine: put a number in, watch what comes out, then describe the graph it draws.
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.
8.F.A.2Compare two functions shown different ways: which grows faster, which starts higher8.F.A.3y = mx + b is a straight line; the squares 1, 4, 9, 16 are not8.F.B.4Build a linear rule from two points or a story; read the rate of change and the start8.F.B.5Describe a graph (up, down, flat, straight or not) and sketch one from a storyColorMyMath · 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.