This image is an example of Gestalt's theory. Its figure-ground shows positive and negative space making it difficult to distinguish the two spaces. http://studio238dghs.blogspot.hk/2012/02/figure-ground-relationships.html
Everything in life is a choice. You can choose to be happy, choose to smile even when it kills you to do it, or you can choose to be miserable. Choose carefully cause some choices shape the rest of your life.--Ellie Sky
This episode of Math Club defines integers as positive whole numbers, their opposites and zero. It explains positive and negative integers using everyday examples such as YouTube "likes" and "dislikes" and borrowing money from a friend. It shows how integers are written on a number line.
How To Avoid The Negative Energy Of Other People. Interesting. There is something in having empathy for others' flaws. The unicorns and magic mirrors I'm going to have to work on... I think I need to print this out and let my children and myself read it.. often...