Spot It contains 4 different error-filled answers for 506 x 25. I found in my math classroom that students profit from (and enjoy) finding others mistakes… especially when they think they caught the teacher in one. =) These error analyses activities provide that opportunity without certain students feeling targeted.
To begin with, I have students explain orally or in written form why the mistaken answer isn’t logical through math reasoning… no actual written work required. Then they explore the incorrect work to explain the mistake(s) and give the correct answer.
These error analyses are perfect for reviewing before a test, drilling home common mistakes students are making, introducing the concept, enriching students who need a challenge, investigating as task cards, or using in a multitude of other ways.
A blank organizer is provided at the end of this download to create your own problem and/or mistakes that your students are making. Also, an answer key for these errors is provided with possible mistakes that students may find as they analyze the problems. However, other mistakes may be found as long as students can accurately support their reasoning for the found error.
"Tinker's Thinkers" aims to provide teachers with relevant materials for the classroom. If there is a part of this packet you would like to "tweak," feel free to let me know your needs and you can contract my services to meet your need for a comparable price. Email me at firstname.lastname@example.org with questions and/or requests.
Spot It - Error Analysis of Double Digit Multiplication (506x25)
by Bridget Tinker
is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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