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Class 7 Maths NCERT Book (PDF) Chapter 1 (Integers) in Hindi is available here for download in PDF format. Download now and prepare for CBSE Class 7 Maths exam.
Michelle Stephan, Didem Akyuz, A Proposed Instructional Theory for Integer Addition and Subtraction, Journal for Research in Mathematics Education, Vol. 43, No. 4 (July 2012), pp. 428-464 ...
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