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Algebra - Fun with Calendars

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Visit this site: http://math.rice.edu/~lanius/Lessons/calen.html
Author:Cynthia Lanius
Description: Take any calendar. Tell a friend to choose 4 days that form a square. If your friend tells you only the sum of the four days, you can tell her what the four days are. How does the puzzle work? Includes a extension page for designing your own puzzle, teachers notes, and links to calendar pages on the Web. Mathematics topics: assigning variables, solving simple linear equations, factoring.
Levels: Fourth Grade, Fifth Grade, Middle School (6-8), Ninth Grade
Languages: English
Resource Types: Lesson Plans and Activities, Problems/Puzzles
Math Topics: Basic Algebra, Calendars/Dates/Time

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