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Computer Software	2
Computer Uses in Education	2
Mathematical Enrichment	2
Mathematics	2
Mathematics Instruction	2
Microcomputers	2
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Secondary School Mathematics	2
Algebra	1
Matrices	1
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School Science and Mathematics

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Lamb, John, Jr.	1
Meyer, Ruth A.	1
Riley, James E.	1

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Computer Programs	2
Journal Articles	2
Guides - Classroom - Teacher	1
Reports - Descriptive	1

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Matrix Algebra, Computers and Secret Coding.

Peer reviewed

Meyer, Ruth A.; Riley, James E. – School Science and Mathematics, 1989

Presents a method for using matrix algebra and computers to encode and decode secret messages. Provides examples of coding procedures, a short review of matrix multiplication, and a BASIC program for use with secret messages containing up to 1000 numbers. (RT)

Descriptors: Algebra, Computer Software, Computer Uses in Education, Mathematical Enrichment

Factorialsum Number Chains.

Peer reviewed

Lamb, John, Jr. – School Science and Mathematics, 1989

Describes several phenomena in which interesting properties of numbers are demonstrated. Includes discussions of amicable, perfect, and sociable numbers. Presents computer programs for conducting a number chain search. (RT)

Descriptors: Computer Software, Computer Uses in Education, Mathematical Enrichment, Mathematics