Help students build a true understanding of percent proportion with this six question error analysis. Each problem shows a student’s incorrect work related to IS/OF, part–whole relationships, and the percent proportion. Students must: ✔ identify the error ✔ explain what the student did wrong ✔ set up the correct proportion ✔ solve accurately This diagnostic approach makes student thinking visible, highlights misconceptions, and gives you immediate data to plan reteach, support, or