The Glowing Letter Mystery | Where Did I Go Wrong? Math Detective Series
The Glowing Letter Mystery is an interactive challenge from Where Did I Go Wrong? (WDIGW), the free elementary math detective series created by Ms. McCarthy from McCarthy Math Academy. Students in Grades 3, 4, and 5 search every episode for hidden Glowing Letter clues, record them in the Detective Notebook, crack the secret code, and unlock exclusive Detective Bonus Files.
Where Did I Go Wrong? helps students analyze common math mistakes while strengthening problem-solving skills, mathematical reasoning, place value understanding, number sense, and confidence. The series is designed for classroom teachers, homeschool families, math intervention, and independent practice for elementary students.
Watch this quick video, and I’ll show you how the Glowing Letter Mystery works.
Then you’ll be ready to investigate every season!
Ready to Solve the Case?
Begin Your Investigation
Visit the Case Files to watch the episodes, search for hidden Glowing Letters, and download the Detective Notebook for the season you are investigating.
Begin Your InvestigationWatch the Cases
Open the season files and begin your investigation.