[blank]
PROFESSIONAL COMMENTARY

This 3-lesson learning unit is designed to make connections between properties of linear functions and cryptology. Students will code and decode using basic shift ciphering, arrow diagrams, tables, the coordinate plane, and graphs. They will describe many of these codes as linear functions and analyze the connection between the rule for the code and the slope and y-intercept of the function. Activity sheets, answer keys, lesson extensions, and suggestions for assessment are included. (author/sw)

OHIO STANDARDS
expand +
Mathematics Academic Content Standards
Patterns, Functions and Algebra Standard
NATIONAL STANDARDS
expand +
Principles and Standards for School Mathematics
Algebra Standard
RESOURCE TYPE
Instructional Resource
PRACTICE LEVEL
Promising Practice
STANDARDS ALIGNMENT
Grades 6–12
TOPICS
Mathematics --
Algebra;
Linear functions;
KEYWORDS
cryptology;
cryptograph;
secret code;
coding
Publisher: National Security Agency
Author: Wendy Selznick, Yiping Helen Wang