Super cool and totally fun math awaits your class. They are the code breakers, and their job is to identify and locate the secret agent by breaking two different codes. They use all their skills to solve a series of double-digit addition...

Color-coded slides model for viewers the various uses of the comma and the period. The rule is presented and followed by several examples. Consider extending the lesson with a practice exercise.

A panoramic view of the European revolutions of the 19th century ties these slides together, which feature paintings and maps to illustrate the effects of each revolution. Details and information about the Greek, Belgian, French, and...