This article may be confusing or unclear to readers. (August 2015) (Learn how and when to remove this template message) A generalization (or generalisation) is a concept in the inductive sense of that word, or an extension of a concept to less-specific English or mathematical criteria.
I always just used a good spray of Spray and Wipe on my whiteboard at school, and itâd come up clean everytime. The BETTER trick is knowing how to get permanent texta off your whiteboard when someone has picked up the wrong pen. Orange oil goo remover, then spray cleaner to get the orange oil off.
1 Use an all felt chalkboard eraser to clean the entire blackboard and then wipe the board with a cloth or chamois that is lint free, clean, dry.  Clean your blackboard erasers on a daily basis by clapping them, wiping them with warm water or cleaning them with a Dusteze Chalkboard Eraser Vacuum Cleaner.