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Peer reviewedJohnston, J. H. – Mathematics in School, 1972
After briefly presenting possible origins for the use of the decimal system for counting and the duodecimal (base twelve) system for many measures, a notational scheme using six positive'' digits and six negative'' digits is presented. Examples and algorithms using this set of digits for operations with whole numbers, fractions, and in…
Descriptors: Algorithms, Arithmetic, Mathematical Concepts, Mathematics
Hargis, Charles H. – Education and Training of the Mentally Retarded, 1971
Descriptors: Exceptional Child Education, Language Role, Mathematics, Mental Retardation
Peer reviewedHicks, Carl D. – Arithmetic Teacher, 1973
A teaching aid called EOPDICA (Electrically Operated Panel for Displaying Illuminated Colored Arrays) is described; suggestions for its use in teaching sets, elementary number theory, and place value and numeration are given. (DT)
Descriptors: Educational Media, Elementary School Mathematics, Instruction, Instructional Materials
Peer reviewedBoykin, Wilfred E. – Arithmetic Teacher, 1973
The Russian-peasant algorithm for multiplication is described and then extended to developing an algorithm for renaming base ten numbers in other number bases. (DT)
Descriptors: Algorithms, Elementary School Mathematics, Instruction, Mathematical Enrichment
Peer reviewedImmerzeel, George; Wiederanders, Don – Arithmetic Teacher, 1973
Worksheets are provided which use basic geometric forms as a vehicle for student discovery of efficient counting procedures and of counting patterns. (DT)
Descriptors: Elementary School Mathematics, Geometric Concepts, Instruction, Instructional Materials
Peer reviewedMathematics Teacher, 1973
Patterns for a set of Napiers Bones and for a denominate number slide rule are provided, with instructions on how to use each of the calculating instruments. (DT)
Descriptors: Algorithms, Instruction, Instructional Materials, Manipulative Materials
Peer reviewedZytkowski, Richard Thomas – Arithmetic Teacher, 1970
Descriptors: Activities, Arithmetic, Enrichment Activities, Fractions
Peer reviewedPatterson, Katherine – Arithmetic Teacher, 1969
Descriptors: Audiovisual Aids, Development, Elementary School Mathematics, Enrichment Activities
Peer reviewedSchrage, Merry – Arithmetic Teacher, 1969
Descriptors: Audiovisual Aids, Elementary School Mathematics, Grade 3, Mathematical Concepts
Peer reviewedHildebrand, Francis H. – Arithmetic Teacher, 1969
Descriptors: Division, Instructional Materials, Mathematical Concepts, Mathematics Instruction
Peer reviewedMcClintic, Joan – Arithmetic Teacher, 1970
Descriptors: Activities, Comparative Analysis, Elementary School Mathematics, Geometric Concepts
Peer reviewedHervey, Margaret A.; Litwiller, Bonnie H. – Arithmetic Teacher, 1972
Descriptors: Addition, Arithmetic, Discovery Learning, Elementary School Mathematics
Peer reviewedOliver, Charlene – Arithmetic Teacher, 1972
Descriptors: Arithmetic, Discovery Learning, Division, Elementary School Mathematics
Peer reviewedMyers, Donald E. – Arithmetic Teacher, 1971
Descriptors: Arithmetic, Elementary School Mathematics, Geometric Concepts, Instruction
Varga, Tamas – Math Teaching, 1970
Descriptors: Instruction, Mathematical Concepts, Mathematics, Number Concepts
