For question 4, students had a variety of amounts of sticky notes on the boards...anywhere from 12 notes by 10 notes to more of a ribbon board look of 120 notes by 1 note or 60 notes by 2 notes. The unexpected part for the students came when figuring out how much space the board they created took up. No matter the configuration of the 120 stick notes, the area of the board was always 360 square inches. This makes sense since all of the boards have the same number of sticky notes, and each note has an individual area of 3, but this took some time for everyone to comprehend. A great discussion piece for sure.
The other thing I think was interesting about this task was if the students chose to find the sticky notes by finding the area of the board/face of the cabinet first, or find the number of sticky notes along the length and the width first. Some student did one method for question 1 and the other for question 3.
This was a great task that would be appropriate for almost all levels of middle school. I have included some student work below.
Middle School Mathematics Instructor
National Council of Teachers of Mathematics Editorial Panel
Iowa Department of Education Statewide Mathematics Leadership Team
Journal of Educational Technology and Society Executive Peer Reviewer
MA Middle Level Mathematics (UNI)
Yager Exemplary Teaching Award 2014