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 Place the paste on the cleaning cloth and rub on the stain until it lifts. 2  Crayon marks can be lifted with a cloth dampened in turpentine or with the application of a little toothpaste (leave for a few minutes, then wash off).. Use warm soapy water to wash down the walls. Use a mild detergent solution. Rather than washing the whole wall, simply spot clean areas that appear dirty. 3. Wash outdoor wooden walls. 1  Externally, any walls should be washed on a day they'll dry quickly, to avoid any possibility of wood rot.