ABSTRACT
The classroom door opened abruptly, and without so much as an “excuse me,” Mr. Danzing walked in, followed by two eleventh-grade students, Allen Kaitelle and Bill Hennings.
“Can I help you, Mr. Danzing?” asked Mr. Shelby, the American history teacher, somewhat surprised and amazed at this interruption of his third-period history class, especially when he was reviewing key material for next week’s fi nal exam.
