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Direct linkSezin, Fatin – Australian Mathematics Teacher, 2009
It is instructive and interesting to find hidden numbers by using different positional numeration systems. Most of the present guessing techniques use the binary system expressed as less-than, greater-than or present-absent type information. This article describes how, by employing four cards having integers 1-64 written in different colours, one…
Descriptors: Mathematics Instruction, Mathematical Concepts, Numbers, Manipulative Materials
Cramer, Kathleen A.; Monson, Debra S.; Wyberg, Terry; Leavitt, Seth; Whitney, Stephanie B. – Teaching Children Mathematics, 2009
Appropriate concrete and pictorial models allow students to construct meaning for rational numbers and operations with the numbers. To develop deep understanding of rational number, sixth through eighth graders must experience a variety of models (NCTM 2000). Since 1979, personnel from the Rational Number Project (RNP), a cooperative research and…
Descriptors: Number Concepts, Grade 8, Arithmetic, Mathematics Instruction
