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## Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models

#### Aysenur Yilmaz [1] , Didem Akyuz [2] , Michelle Stephan [3]

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Number line models provide a visual aid for students to examine the relationship of integers with each other and facilitate learning of integers and integer operations. Such models are typically used when students are asked real-life problems. This study employs a qualitative case study design to perform an in-depth analysis of how middle grade students use number line models and which models they instinctively prefer for different real-life contexts. To understand students’ way of thinking, a questionnaire including real-life context problems about integers was used. Additionally, interview data was used to get a deep insight into students’ written responses. The results indicated that middle grade students have three evoked concept images of number line models namely, horizontal, vertical, and the Cartesian plane combining the two. The horizontal number line model was found to dominate over the other two models even in contexts that are typically associated with a vertical one. The study also found that more than half of the students that took part in the study could not properly use any number line model. Finally, the study added to the evidence that there was a symbiotic relationship between arithmetic calculation and using number line in that errors made during one are often corrected with the other.

Calculation strategies, Concept image, Contextual problems, Integers, Number line
• Yilmaz, A., Akyuz, D., & Stephan, M. (2019). Middle grade students’ evoked concept images of number line models and their calculation strategies with integers using these models. International Journal of Education in Mathematics, Science and Technology (IJEMST), 7(1), 93-115. DOI:10.18404/ijemst.509292
Birincil Dil en Sosyal Makaleler Yazar: Aysenur Yilmaz Yazar: Didem Akyuz Yazar: Michelle Stephan
 Bibtex @araştırma makalesi { ijemst509292, journal = {International Journal of Education in Mathematics, Science and Technology}, issn = {}, eissn = {2147-611X}, address = {ISRES Publishing}, year = {2019}, volume = {7}, pages = {93 - 115}, doi = {10.18404/ijemst.509292}, title = {Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models}, key = {cite}, author = {Stephan, Michelle and Akyuz, Didem and Yilmaz, Aysenur} } APA Yilmaz, A , Akyuz, D , Stephan, M . (2019). Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models. International Journal of Education in Mathematics, Science and Technology, 7 (1), 93-115. DOI: 10.18404/ijemst.509292 MLA Yilmaz, A , Akyuz, D , Stephan, M . "Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models". International Journal of Education in Mathematics, Science and Technology 7 (2019): 93-115 Chicago Yilmaz, A , Akyuz, D , Stephan, M . "Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models". International Journal of Education in Mathematics, Science and Technology 7 (2019): 93-115 RIS TY - JOUR T1 - Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models AU - Aysenur Yilmaz , Didem Akyuz , Michelle Stephan Y1 - 2019 PY - 2019 N1 - doi: 10.18404/ijemst.509292 DO - 10.18404/ijemst.509292 T2 - International Journal of Education in Mathematics, Science and Technology JF - Journal JO - JOR SP - 93 EP - 115 VL - 7 IS - 1 SN - -2147-611X M3 - doi: 10.18404/ijemst.509292 UR - http://dx.doi.org/10.18404/ijemst.509292 Y2 - 2018 ER - EndNote %0 International Journal of Education in Mathematics, Science and Technology Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models %A Aysenur Yilmaz , Didem Akyuz , Michelle Stephan %T Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models %D 2019 %J International Journal of Education in Mathematics, Science and Technology %P -2147-611X %V 7 %N 1 %R doi: 10.18404/ijemst.509292 %U 10.18404/ijemst.509292 ISNAD Yilmaz, Aysenur , Akyuz, Didem , Stephan, Michelle . "Middle Grade Students’ Evoked Concept Images of Number Line Models and Their Calculation Strategies with Integers Using These Models". International Journal of Education in Mathematics, Science and Technology 7 / 1 (Ocak 2019): 93-115. http://dx.doi.org/10.18404/ijemst.509292