8.F.B.5 Grade 8 · FunctionsDescribe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear).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.1A function gives each input exactly one output; its graph is the input-output pairs8.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 startColorMyMath · 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.