on the two connected concepts in secondary school mathematics: algebraic expressions and linear...

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Procedia - Social and Behavioral Sciences 106 (2013) 1966 – 1970 1877-0428 © 2013 The Authors. Published by Elsevier Ltd. Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey. doi:10.1016/j.sbspro.2013.12.224 ScienceDirect Available online at www.sciencedirect.com © 2013 The Authors. Published by Elsevier Ltd. Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey.

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Page 1: On the Two Connected Concepts in Secondary School Mathematics: Algebraic Expressions and Linear Equations

Procedia - Social and Behavioral Sciences 106 ( 2013 ) 1966 – 1970

1877-0428 © 2013 The Authors. Published by Elsevier Ltd.Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey.doi: 10.1016/j.sbspro.2013.12.224

ScienceDirectAvailable online at www.sciencedirect.com

© 2013 The Authors. Published by Elsevier Ltd.Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey.

Page 2: On the Two Connected Concepts in Secondary School Mathematics: Algebraic Expressions and Linear Equations

1967 Sinan Aydin et al. / Procedia - Social and Behavioral Sciences 106 ( 2013 ) 1966 – 1970

Page 3: On the Two Connected Concepts in Secondary School Mathematics: Algebraic Expressions and Linear Equations

1968 Sinan Aydin et al. / Procedia - Social and Behavioral Sciences 106 ( 2013 ) 1966 – 1970

Page 4: On the Two Connected Concepts in Secondary School Mathematics: Algebraic Expressions and Linear Equations

1969 Sinan Aydin et al. / Procedia - Social and Behavioral Sciences 106 ( 2013 ) 1966 – 1970

Page 5: On the Two Connected Concepts in Secondary School Mathematics: Algebraic Expressions and Linear Equations

1970 Sinan Aydin et al. / Procedia - Social and Behavioral Sciences 106 ( 2013 ) 1966 – 1970

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