Estimation 180 Poster

This year, I am trying out Estimation 180 in my Math Concepts class, a class for 9th graders not yet ready for Algebra 1. After two weeks of giving students the formula for percent error EVERY SINGLE DAY, I finally made a poster!

This poster was inspired by a tweet from Lisa Bejarano.

Image Source: https://twitter.com/lisabej_manitou/status/670262625935077377

Here's my version:


I printed the poster on 11 x 17 card stock (affiliate link). You can download the file here.