On teaching math

This reiterates a basic principle I have often stressed here: you cannot teach what you do not know. The essential qualification for being a good teacher is knowledge of the subject. Otherwise you add nothing to the textbook.

http://www.theglobeandmail.com/news/opinions/opinion/too-many-teachers-cant-do-math-let-alone-teach-it/article2183700/

Pho.to

This site offers an unusually good selection of photo effects. Good for materials development--making images interesting.

Festisite

This site has a variety of tools that might be useful for materials creation, especially for vocabulary: a fake money maker, fancy text templates, and so forth.