Needed for Class-Surface Area

We will begin using formulas next week.  I would like to have a toilet paper roll, empty of course, for each student.  So as the week goes by, send those in with your child's name on it.  I am also looking for 30 empty cereal boxes.  Please collapse them and send them in so we can use them to find the area.

My class set of dry erase markers are just about depleted.  If anyone can donate some, I would appreciate it.  I am always in need of cap erasers.

Thank you for your help.