8.G.A.1 Grade 8 · GeometryVerify experimentally the properties of rotations, reflections, and translations: a. Lines are transformed to lines, and line segments to line segments of the same length.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 8.
Play the game: Slide, Turn, Flipfree, no sign-up →Shapes are built, turned, cut and stacked, not just named. A square is an area you lay out yourself; a cube is that square stacked into layers.
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.G.A.2Congruent: find the slides, turns and flips that put one shape exactly on another8.G.A.3Move shapes with coordinate rules: (x+3, y−2), (x, −y), (−y, x), (2x, 2y), and work back8.G.A.4Similar: moves plus a stretch; find the scale factor and the sequence8.G.A.5A triangle's angles make 180; the exterior angle; parallel lines cut by a transversal8.G.B.6Pythagorean theorem and its converse: the four-triangle proof, and pouring two squares into the third8.G.B.7Use the Pythagorean theorem8.G.B.8Distance between two grid points: along and up are the legs, the distance is the long side8.G.C.9Volume of cones, cylinders and spheres: a cone is ⅓ of a cylinder, a sphere ⅔ColorMyMath · 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.