Goofus is know for making mistakes in math! It's up to your students to help him find his mistakes. Error analysis shows deeper understanding of a mathematical concept, and kids are notorious for pointing out everyone's mistakes except their own! There are 5 pages with 3 problems each for students to analyze. Also includes three posters for fraction, numerator, and denominator. Great for morning work, warm-ups, homework, bell-ringers, or centers.
Common Core Aligned: 3.NFA.1, 3.NFA.2, 3.NFA.3