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IDEAS.
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Duncan, David R.; Litwiller, Bonnie H. – Arithmetic Teacher, 1986
Practice on computation is provided using new and novel situations, with discovery of number patterns a bonus of the computation. Activities with disguised addition and multiplication tables for whole numbers and integers are presented for varying levels. (MNS)
Descriptors: Addition, Computation, Drills (Practice), Elementary School Mathematics
Diagonal Sums: Practice, Discovery, and Proof
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Litwiller, Bonnie H.; Duncan, David R. – School Science and Mathematics, 1974
Descriptors: Addition, Elementary School Mathematics, Instruction, Mathematical Enrichment
Patterns in Powers
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Litwiller, Bonnie H.; Duncan, David R. – School Science and Mathematics, 1974
Descriptors: Congruence, Integers, Mathematical Concepts, Mathematical Enrichment
Checkerboards and Sugar Cubes: Geometric Counting Patterns
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Duncan, David R.; Litwiller, Bonnie H. – Two-Year College Mathematics Journal, 1973
The problem of determining the number of squares on a checkerboard is extended to finding the number of rectangles on an n x n board and finding the total numbers of cubes and rectangular solids in an n x n x n cube. (DT)
Descriptors: College Mathematics, Geometric Concepts, Mathematical Enrichment, Mathematics
Habits of Rabbits: Another Look at the Fibonacci Sequence
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Duncan, David R.; Litwiller, Bonnie H. – School Science and Mathematics, 1978
Sequences resulting from variations of the conditions of the original Fibonacci problem are investigated. (MN)
Descriptors: Instructional Materials, Mathematical Applications, Mathematics Education, Pattern Recognition
Patterns: Digits, Squares, and Bases
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Duncan, David R.; Litwiller, Bonnie H. – Mathematics Teacher, 1976
Patterns emerging when two-digit numbers in various bases are operated on by squaring and summing the digits. (SD)
Descriptors: Instruction, Learning Activities, Mathematics, Mathematics Education
Pentagonal Patterns in the Addition Table.
Peer reviewed Peer reviewed
Litwiller, Bonnie H.; Duncan, David R. – Arithmetic Teacher, 1985
Three activities and patterns involving the addition table are described, each involving pentagons. (MNS)
Descriptors: Addition, Drills (Practice), Elementary Education, Elementary School Mathematics