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* Herold-Blasius, Raja; [[Benjamin Rott|Rott, Benjamin]]; [[Timo Leuders|Leuders, Timo]] (2017): Problemlösen lernen mit Strategieschlüsseln - Ergebnisse einer qualitativen Studie mit Dritt- und Viertklässlern. ''mathematica didactica'' 40(2017), Themenheft Problemlösen, online first.
 
* Herold-Blasius, Raja; [[Benjamin Rott|Rott, Benjamin]]; [[Timo Leuders|Leuders, Timo]] (2017): Problemlösen lernen mit Strategieschlüsseln - Ergebnisse einer qualitativen Studie mit Dritt- und Viertklässlern. ''mathematica didactica'' 40(2017), Themenheft Problemlösen, online first.
 
* Herold-Blasius, Raja (2017): Strategy keys as tool for problem solving. ''Mathematics Teaching in Middle School (MTMS)'' 23(3), S. 147-153.
 
* Herold-Blasius, Raja (2017): Strategy keys as tool for problem solving. ''Mathematics Teaching in Middle School (MTMS)'' 23(3), S. 147-153.
* Herold-Blasius, Raja & [[Benjamin Rott|Rott, Benjamin]] (2016): Using Strategy Keys as a Tool to influence strategy behaviour – A qualitative Study. In [[Torsten Fritzlar|T. Fritzlar]], D. Assmus, [[Kerstin Bräuning|K. Bräuning]], [[Ana Kuzle|A. Kuzle]] & B. Rott (Hrsg.), ''Problem solving in mathematics education. Proceedings of the 2015 joint conference of ProMath and the GDM working group on problem solving'' (S. 137–148). Münster: WTM.    
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* Herold-Blasius, Raja & [[Benjamin Rott|Rott, Benjamin]] (2016): Using Strategy Keys as a Tool to influence strategy behaviour – A qualitative Study. In [[Torsten Fritzlar|T. Fritzlar]], [[Daniela Assmus|D. Assmus]], [[Kerstin Bräuning|K. Bräuning]], [[Ana Kuzle|A. Kuzle]] & [[Benjamin Rott|B. Rott]] (Hrsg.), ''Problem solving in mathematics education. Proceedings of the 2015 joint conference of ProMath and the GDM working group on problem solving'' (S. 137–148). Münster: WTM.    
 
* Herold-Blasius, Raja & Jazby, Dan (2016): Can Strategy Keys help 3<sup>rd</sup> and 4<sup>th</sup> graders engage in mathematical problem solving? In: (Eds.). ''Proceedings of the [[40th Conference of the International Group for the Psychology of Mathematics Education]]''. Vol. 1. Szeged, Hungary: PME, S. 171.
 
* Herold-Blasius, Raja & Jazby, Dan (2016): Can Strategy Keys help 3<sup>rd</sup> and 4<sup>th</sup> graders engage in mathematical problem solving? In: (Eds.). ''Proceedings of the [[40th Conference of the International Group for the Psychology of Mathematics Education]]''. Vol. 1. Szeged, Hungary: PME, S. 171.
 
* [[Kathleen Philipp|Philipp, Kathleen]] & Herold-Blasius, Raja (2016): Schlüssel zum Erfolg. Mit Strategieschlüsseln Problemlösestrategien fördern. In: ''Praxis der Mathematik in der Schule 68'', S. 9-14.
 
* [[Kathleen Philipp|Philipp, Kathleen]] & Herold-Blasius, Raja (2016): Schlüssel zum Erfolg. Mit Strategieschlüsseln Problemlösestrategien fördern. In: ''Praxis der Mathematik in der Schule 68'', S. 9-14.
* Herold, Raja & Rott, Benjamin (2015): Problem solving with strategy keys: A study to identify user types. In: Beswick, K., Muir, T., & Wells, J. (Eds.) (2015). Proceedings of the [[39th Conference of the International Group for the Psychology of Mathematics Education]] (Vol. 3). Hobart, Australia: PME, S. 65-73.
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* Herold, Raja & [[Benjamin Rott|Rott, Benjamin]] (2015): Problem solving with strategy keys: A study to identify user types. In: Beswick, K., Muir, T., & Wells, J. (Eds.) (2015). Proceedings of the [[39th Conference of the International Group for the Psychology of Mathematics Education]] (Vol. 3). Hobart, Australia: PME, S. 65-73.
 
* [[Bärbel Barzel|Barzel, Bärbel]] & Herold, Raja (2013): Conditions for a Successful Use of Computeralgebra in Mathematics Teaching. In: [[Anke Lindmeier|Lindmeier, A.]] & [[Aiso Heinze|Heinze, A.]] (Hrsg.). ''Proceedings of the [[37th Conference of the International Group for the Psychology of Mathematics Education]]''. Volume 5. PME: Kiel, S. 13.
 
* [[Bärbel Barzel|Barzel, Bärbel]] & Herold, Raja (2013): Conditions for a Successful Use of Computeralgebra in Mathematics Teaching. In: [[Anke Lindmeier|Lindmeier, A.]] & [[Aiso Heinze|Heinze, A.]] (Hrsg.). ''Proceedings of the [[37th Conference of the International Group for the Psychology of Mathematics Education]]''. Volume 5. PME: Kiel, S. 13.