8.EE.A.3 Grade 8 · Expressions and EquationsUse numbers expressed in the form of a single digit multiplied by an integer power of 10 to estimate very large or very small quantities, and express how many times as much one is than the other.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 8.
Play the game: Powers of Tenfree, 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.
8.EE.A.1Integer exponents: count down the powers so 3⁰ = 1 and 3⁻¹ = 1/3; 3² × 3⁻⁵ = 3⁻³8.EE.A.2Square roots and cube roots of small perfect squares and cubes8.EE.A.4Scientific notation: multiply and divide, read calculator E, choose units; sunlight takes 5 × 10² s8.EE.B.5Graph it: the unit rate is the slope; compare two rates8.EE.B.6Similar triangles: the same slope between any two points; y = mx + b8.EE.C.7Equations with x on both sides: one, none or infinitely many answers8.EE.C.8Two equations at once: swap on two balances, and where two lines crossColorMyMath · 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.