@book {1042,
	title = {Mathematische Begriffsbildung {\textendash} PriMaPodcasts im bilingualen Kontext},
	year = {2022},
	publisher = {Waxmann},
	organization = {Waxmann},
	address = {M{\"u}nster, New York},
	author = {Klose, Rebecca}
}
@inbook {1053,
	title = { Kommunikationspotenziale einer haptisch-enaktiven und digitalen F{\"o}rderung der Anteilvorstellung bei Grundschulkindern},
	booktitle = {Mathematik, Sprache und Medien},
	year = {2021},
	pages = {165{\textendash}182},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {G{\"o}tze, Daniela and Stark, Julia},
	editor = {Klose, Rebecca and Schreiber, Christof}
}
@booklet {1041,
	title = {Mathematik, Sprache und Medien. 7. Band der Reihe Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe.},
	year = {2021},
	publisher = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Klose, Rebecca and Schreiber, Christof}
}
@inbook {1026,
	title = {PriMaPodcasts als Erhebungsinstrument im bilingualen Kontext},
	booktitle = {Forschung zu und mit digitalen Medien {\textendash} Befunde f{\"u}r den Mathematikunterricht der Primarstufe},
	year = {2020},
	pages = {165-180},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Klose, Rebecca},
	editor = {Ladel, Silke and Rink, Roland and Schreiber, Christof and Walter, Daniel}
}
@book {997,
	title = {Projektorientiertes Lernen mit dem Internet - PrimarWebQuest},
	year = {2020},
	publisher = {Schneider Verlag},
	organization = {Schneider Verlag},
	address = {Hohengehren},
	author = {Schreiber, Christof and Kromm, Hannah}
}
@inbook {1001,
	title = {Schnittstelle: Mathematik ~ Radio},
	booktitle = {framediale},
	year = {2020},
	pages = {259-269},
	publisher = {kopaed},
	organization = {kopaed},
	address = {M{\"u}nchen},
	author = {Peters, Franziska and Schreiber, Christof},
	editor = {Knaus, T. and Engel, O.}
}
@inbook {1000,
	title = {TE@M: Teacher Education and Media},
	booktitle = {framediale},
	year = {2020},
	pages = {239-258},
	publisher = {kopaed},
	organization = {kopaed},
	address = {M{\"u}nchen},
	author = {Schreiber, Christof and Prange, M. and Matz, Julia and Greiten, K.},
	editor = {Knaus, T. and Engel, O.}
}
@inbook {959,
	title = {Audio-Podcasts als Erhebungsinstrument im Kontext mathematischer Begriffsbildung},
	booktitle = {Mathematiklernen aus interpretativer Perspektive {\textendash} Aktuelle Themen, Arbeiten und Fragen},
	year = {2019},
	pages = {193-223},
	publisher = {Waxmann},
	organization = {Waxmann},
	address = {M{\"u}nster},
	author = {Klose, Rebecca},
	editor = {Brandt, Birgit and Tiedemann, Kerstin}
}
@inbook {975,
	title = {Digitale Medien in der mathematikdidaktischen Lehramtsausbildung {\textendash} Erfahrungen aus Lehrangeboten zu einem Verbundprojekt},
	booktitle = {Digitale Medien in der Lehrerbildung Mathematik {\textendash} Konzeptionelles und Beispiele f{\"u}r die Primarstufe. 5. Band der Reihe Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	year = {2019},
	pages = {13-36},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Krauthausen, G. and Pilgrim, A.},
	editor = {Walter, D. and Rink, R.}
}
@inbook {933,
	title = {Classroom Assessment and Learning Support for Logical Reasoning in Mathematics Education - Suggestion of an E-proof-Environment},
	booktitle = {Classroom Assessment in Mathematics: Perspectives from around the Globe},
	year = {2018},
	publisher = {Springer},
	organization = {Springer},
	address = {Cham},
	author = {Platz, Melanie and Krieger, M and Winter, K and Niehaus, Engelbert},
	editor = {Thompson, Denisse R. and Burton, Megan and Cusi, Annalisa and Wright, David}
}
@article {1006,
	title = {Mathe, m{\"u}ndlich},
	journal = {Computer und Unterricht},
	volume = {Heft 111},
	year = {2018},
	pages = {25-27},
	author = {Schreiber, Christof and Kromm, Hannah}
}
@booklet {958,
	title = {Mathematik mit digitalen Medien {\textendash} konkret. Ein Handbuch f{\"u}r Lehrpersonen der Primarstufe. 4. Band der Reihe Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	year = {2018},
	publisher = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Ladel, Silke and Kortenkamp, Ulrich and Etzold, Heiko}
}
@inbook {999,
	title = {Mathematische Schnitzeljagd mit Actionbound - Mathematik in der Umwelt neu entdecken},
	booktitle = {Mathematik mit digitalen Medien - konkret. Ein Handbuch f{\"u}r Lehrpersonen in der Primarstufe},
	year = {2018},
	pages = {77-90},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Schaffer, Max and Schreiber, Christof and Schulz, Kristina},
	editor = {Ladel, S. and Kortenkamp, U. and Etzold, H.}
}
@article {1005,
	title = {PrimarWebQuest zur Symmetrie - Projektorientiertes Lernen mit dem Internet},
	journal = {Mathematik differenziert},
	volume = {Heft 4},
	year = {2018},
	pages = {16-21},
	author = {Schreiber, Christof and Kromm, Hannah}
}
@article {965,
	title = {{\quotedblbase}Symmetrie ist einfach nur genaue Spiegelbilder malen{\textquotedblleft} - Den Begriff Symmetrie im Podcast erkl{\"a}ren},
	journal = {Mathematik differenziert},
	volume = {Heft 4},
	year = {2018},
	pages = {34-38},
	author = {Klose, Rebecca}
}
@inbook {960,
	title = {TellMEE - Telling Mathematics in Elementary Education},
	booktitle = {Early Mathematics Learning {\textendash} Selected Papers of the POEM Conference 2016},
	year = {2018},
	pages = {159-177},
	publisher = {Springer},
	organization = {Springer},
	address = {New York},
	author = {Klose, Rebecca and Schreiber, Christof},
	editor = {Benz, Christiane and Steinweg, Anna Susanne and Gasteiger, Hedwig and Vollmuth, Helene and Sch{\"o}ner, Priska and Z{\"o}llner, Johanna}
}
@article {962,
	title = {Audio-Podcasts zur Untersuchung mathematischer Begriffsbildungsprozesse im bilingualen Kontext},
	year = {2017},
	url = {http://forschungswerkstatt-medienpaedagogik.de},
	author = {Klose, Rebecca},
	editor = {Knaus, Thomas}
}
@inbook {939,
	title = {Distraktorenermittlung f{\"u}r elektronische Beweise in der Lehre},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2017},
	year = {2017},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Platz, Melanie and Krieger, M and Niehaus, Engelbert and Winter, K}
}
@inbook {850,
	title = {Einsatz virtueller Materialien zum Thema {\quotedblbase}F{\"o}rderung des r{\"a}umlichen Vorstellungsverm{\"o}gens{\textquotedblleft} am Beispiel der App Kl{\"o}tzchen},
	booktitle = {Digitale Medien im Mathematikunterricht der Primarstufe. Ein Handbuch f{\"u}r die Lehrerausbildung. 3. Band der Reihe Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	year = {2017},
	pages = {131-148},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nchen},
	author = {Ladel, Silke and Kuzle, Ana},
	editor = {Ladel, Silke and Schreiber, Christof and Rink, Roland}
}
@conference {934,
	title = {Electronic Proofs in Mathematics Education - A South African Teacher Professional Development (TPD) course informing the conceptualisation of an E-proof System Authoring Support Workshop},
	booktitle = {IST-Africa 2017 Conference Proceedings},
	year = {2017},
	author = {Platz, Melanie and Krieger, M and Winter, K and Niehaus, Engelbert}
}
@article {963,
	title = {Mathematical audio-podcasts for teacher education and school},
	journal = {Teachers and Curriculum},
	volume = {17 (2)},
	year = {2017},
	pages = {41-46},
	author = {Schreiber, Christof and Klose, Rebecca}
}
@article {910,
	title = {{\quotedblbase}Ton ab - erkl{\"a}r doch mal!"},
	journal = {Mathematik differenziert},
	volume = {1},
	year = {2017},
	pages = {22-27},
	publisher = {Braunschweig},
	address = {Westermann},
	author = {Christof Schreiber and Rebecca Klose and Kromm, H.}
}
@inbook {961,
	title = {The use of artifacts and different representations by producing mathematical audio-podcasts},
	booktitle = {Proceedings of the Tenth Congress of the European Society for Research in Mathematics Education},
	year = {2017},
	pages = {4008-4015},
	publisher = {DCU Institute of Education and ERME},
	organization = {DCU Institute of Education and ERME},
	address = {Dublin},
	author = {Schreiber, Christof and Klose, Rebecca},
	editor = {Dooley, Therese and Gueudet, Ghislaine}
}
@inbook {805,
	title = {Artifact-Centric Activity Theory - A Framework for the Analysis of the Design and Use of Virtual Manipulatives},
	booktitle = {International Perspectives on Teaching and Learning Mathematics with Virtual Manipulatives},
	year = {2016},
	pages = {25-40},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	address = {Heidelberg},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Moyer-Packenham, Patricia}
}
@inbook {843,
	title = {Delving into the nature of problem solving processes in a dynamic geometry environment: Different technological effects on cognitive processing},
	booktitle = {Technology, Knowledge and Learning},
	year = {2016},
	pages = {1-28},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	address = {Berlin Heidelberg},
	author = {Kuzle, Ana}
}
@article {822,
	title = {MathehAPPening- Spiele-Apps im Mathematikunterricht},
	journal = {L.A. Multimedia},
	volume = {1},
	year = {2016},
	pages = {39-41},
	author = {Goisser, L. and Kromm, H. and Lengnink, Katja and Schreiber, Christof}
}
@inbook {912,
	title = {Mathematik auf die Ohren - Das Kinderfunkkolleg des Hessischen Rundfunks in Schule und Lehrerbildung},
	booktitle = { L.A. Multimedia},
	year = {2016},
	pages = {43-45},
	author = {Kromm, H. and M{\"u}ller, R. and Pfleimfeldner, M. and Christof Schreiber}
}
@inbook {913,
	title = {Wi(e)derst{\"a}nde f{\"u}r den mathematischen Lernprozess nutzen},
	booktitle = {framediale 2015 },
	year = {2016},
	pages = {199-214},
	publisher = {M{\"u}nchen},
	organization = {M{\"u}nchen},
	address = {kopaed},
	author = {Christof Schreiber and Rebecca Klose},
	editor = {Knaus, T. and Engel, O.}
}
@article {780,
	title = {Audio-Podcasts f{\"u}r die MINT-F{\"a}cher.},
	journal = {L.A. Multimedia},
	volume = {3},
	year = {2015},
	pages = {26-29},
	author = {Schreiber, Christof and Klose, Rebecca}
}
@proceedings {779,
	title = {Mathematische Audio-Podcasts f{\"u}r Lehrerbildung und Schule},
	year = {2015},
	pages = {101-111},
	publisher = {kopaed},
	address = {M{\"u}nchen},
	author = {Schreiber, Christof and Klose, Rebecca},
	editor = {T. Knaus and O. Engel}
}
@conference {773,
	title = {Use and development of mathematical language in bilingual learning settings},
	booktitle = {Proceedings of the Ninth Congress of European Society for Research in Mathematics Education.},
	year = {2015},
	publisher = {Congress of the European Society for Research in Mathematics Education (CERME)},
	organization = {Congress of the European Society for Research in Mathematics Education (CERME)},
	address = {Prague, Czech Republic},
	author = {Rebecca Klose}
}
@inbook {709,
	title = {Audio-Podcasts zu mathematischen Themen - Begriffsbildung mit digitalen Medien},
	booktitle = {Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	volume = {2},
	year = {2014},
	pages = {31-60},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	type = {S. Ladel \& C. Schreiber},
	address = {M{\"u}nster},
	author = {Schreiber, Christof and Klose, Rebecca}
}
@conference {764,
	title = {Development of a Flexible Understanding of Place Value},
	year = {2014},
	publisher = {A Mathematics Education Perspective on early Mathematics Learning between the Poles of Instruction and Construction (POEM)},
	organization = {A Mathematics Education Perspective on early Mathematics Learning between the Poles of Instruction and Construction (POEM)},
	address = {Malm{\"o}, Schweden},
	url = {http://www.mah.se/upload/FAKULTETER/LS/LS-seminarier/POEM/Ladel_Kortenkamp\%20-\%20Development\%20of\%20a\%20flexible\%20understanding\%20of\%20place\%20value.pdf},
	author = {Ladel, Silke and Kortenkamp, Ulrich}
}
@inbook {777,
	title = {Digitale Medien im Mathematikunterricht der Grundschule - Innovation auf dem Tablet serviert?},
	booktitle = {Von Audiopodcast bis Zahlensinn},
	series = {Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	volume = {2},
	year = {2014},
	pages = {7-29},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Krauthausen, G{\"u}nter},
	editor = {Ladel, Silke and Schreiber, Christof}
}
@conference {670,
	title = {Early Mathematics Learning. Selected Papers of the POEM 2012 Conference},
	booktitle = {POEM},
	year = {2014},
	publisher = {Springer},
	organization = {Springer},
	author = {Benz, C. and Brandt, B. and Kortenkamp, U. and Krummheuer, G. and Ladel, S. and Vogel, R.}
}
@conference {765,
	title = {Flexible Use and Understanding of Place Value Via Traditional and Digital Tools. Research Report.},
	booktitle = {Proceedings of the 38th Conference of the International Group for the Psychology of Mathematics Education and the 36th Conference of the North American Chapter of the Psychology of Mathematics Education},
	year = {2014},
	publisher = {Psychology of Mathematics Education (PME)},
	organization = {Psychology of Mathematics Education (PME)},
	address = {Vancouver, Canada},
	author = {Kortenkamp, Ulrich and Ladel, Silke},
	editor = {Lilijedahl, Peter and Nicol, Cynthia and Oesterle, Susan and Allan, Darien}
}
@inbook {763,
	title = {Handlungsorientiert zu einem flexiblen Verst{\"a}ndnis von Stellenwerten - ein Ansatz aus Sicht der Artefact-Centric Activity Theory},
	booktitle = {Von Audiopodcast bis Zahlensinn},
	series = {Lernen, Lehren und Forschen mit digitalen Medien in der Primarstufe},
	volume = {2},
	year = {2014},
	pages = {151-177},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Ladel, Silke and Schreiber, Christof}
}
@inbook {762,
	title = {"Ist das dann noch ein Zehner oder ist das dann ein Einer?" - Zu einem flexiblen Verst{\"a}ndnis von Stellenwerten},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2014 - Beitr{\"a}ge zur 48. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik vom 10. bis 14. M{\"a}rz 2014 in Koblenz},
	year = {2014},
	pages = {699-703},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Roth, J{\"u}rgen and Armes, Judith}
}
@inbook {772,
	title = {PriMaPodcasts im bilingualen Mathematikunterricht},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2014 - Beitr{\"a}ge zur 48. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik vom 10. bis 14. M{\"a}rz 2014 in Koblenz},
	year = {2014},
	pages = {619-622},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Rebecca Klose},
	editor = {Roth, J{\"u}rgen and Armes, Judith}
}
@conference {713,
	title = {Producing Audio-Podcasts to Mathematics},
	booktitle = {CME Proceedings},
	year = {2014},
	address = {Poznan},
	author = {Klose, Rebecca and Schreiber, Christof}
}
@article {766,
	title = {Reasoning in Primary Mathematics - An ICT-Supported Environment},
	journal = {Bildung und Erziehung},
	volume = {67},
	year = {2014},
	pages = {409-419},
	author = {Bezold, Angela and Ladel, Silke},
	editor = {K{\"a}ser, Udo and R{\"o}hr-Sendlmeier, Una and Rakhkochkine, Anatoli}
}
@article {731,
	title = {An activity-approach to multi-touch tools in early maths learning},
	journal = {The International Journal for Technology in Mathematics Education},
	volume = {20},
	year = {2013},
	pages = {3-8},
	author = {Kortenkamp, Ulrich and Ladel, Silke}
}
@article {757,
	title = {An activity-theoretic approach to multi-touch tools in early maths learning},
	journal = {The International Journal for Technoloy in Mathematics Education},
	volume = {20},
	year = {2013},
	pages = {3-8},
	author = {Ladel, Silke and Kortenkamp, Ulrich}
}
@conference {761,
	title = {Designing a technology based learning environment for place value using artefact-centric Activity Theory. Research Forum Activity Theoretical approaches to mathematics classroom practices with the use of technology},
	booktitle = {Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education},
	year = {2013},
	publisher = {Psychology of Mathematics Education (PME)},
	organization = {Psychology of Mathematics Education (PME)},
	address = {Kiel, Germany},
	author = {Kortenkamp, Ulrich and Ladel, Silke},
	editor = {Lindmeier, Anke M. and Heinze, Aiso}
}
@proceedings {776,
	title = {Digital tools in elementary mathematics education.},
	year = {2013},
	pages = {33-44},
	publisher = {Charles University},
	address = {Prag},
	author = {Krauthausen, G{\"u}nter},
	editor = {Novotn{\'a}, Jarmila and Moraov{\'a}, Hana}
}
@book {758,
	title = {Early Mathematics Learning. Selected Papers of the POEM 2012 Conference.},
	year = {2013},
	publisher = {Springer},
	organization = {Springer},
	address = {New York},
	editor = {Kortenkamp, Ulrich and Brandt, Birgit and Benz, Christiane and Krummheuer, G{\"o}tz and Ladel, Silke and Vogel, Rose}
}
@inbook {759,
	title = {"Garantierter Lernerfolg" oder "Digitale Demenz"? Zum fr{\"u}hen Lernen von Mathematik mit digitalen Medien.},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2013 - Beitr{\"a}ge zur 47. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik vom 4.3.2013 bis 8.3.2013 in M{\"u}nster},
	year = {2013},
	pages = {54-61},
	publisher = {WTM-Verlag},
	organization = {WTM-Verlag},
	address = {M{\"u}nster},
	author = {Ladel, Silke},
	editor = {Greefrath, Gilbert and K{\"a}pnick, Friedhelm and Stein, Martin}
}
@inbook {760,
	title = {Number Concepts - Process of Internalization and Externalization by the Use of Multi-Touch Technology},
	booktitle = {Early Mathematics Learning. Selected Papers of the POEM 2012 Conference.},
	year = {2013},
	pages = {237-253},
	publisher = {Springer},
	organization = {Springer},
	address = {New York},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Kortenkamp, Ulrich and Brandt, Birgit and Benz, Christiane and Krummheuer, G{\"o}tz and Ladel, Silke and Vogel, Rose}
}
@book {775,
	title = {Digitale Medien im Mathematikunterricht der Grundschule},
	year = {2012},
	publisher = {Springer-Spektrum},
	organization = {Springer-Spektrum},
	address = {Berlin},
	author = {Krauthausen, G{\"u}nter}
}
@article {771,
	title = {Englische PriMaPodcasts im Mathematikunterricht},
	year = {2012},
	url = {http://www.lehrer-online.de/primapodcasts-englisch-mathe.php.},
	author = {Rebecca Klose}
}
@conference {754,
	title = {Finger-symbol-sets and multi-touch for a better understanding of numbers and operations},
	booktitle = {Proceedings of the Seventh Congress of the European Society for Research in Mathematics Education.},
	year = {2011},
	month = {Februar},
	publisher = {Congress of the European Society for Research in Mathematics Education (CERME)},
	organization = {Congress of the European Society for Research in Mathematics Education (CERME)},
	address = {Rzesz{\'o}w, Poland},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Pytlak, Marta and Rowland, Tim and Swoboda, Ewa}
}
@conference {753,
	title = {Implementation of a multi-touch-environment supporting finger-symbol-sets},
	booktitle = {Proceedings of the Seventh Congress of the European Society for Research in Mathematics Education.},
	year = {2011},
	month = {Februar},
	publisher = {Congress of the European Society for Research in Mathematics Education (CERME)},
	organization = {Congress of the European Society for Research in Mathematics Education (CERME)},
	address = {Rzesz{\'o}w, Poland},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Pytlak, Marta and Rowland, Tim and Swoboda, Ewa}
}
@conference {746,
	title = {Realisation of MERs (Multiple Extern Representations) and MERLs (Multiple Equivalent Linked Representations) in Elementary Mathematics Software},
	booktitle = {Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France)},
	year = {2009},
	month = {Januar, Februar},
	publisher = {Congress of the European Society for Research in Mathematics Education (CERME)},
	organization = {Congress of the European Society for Research in Mathematics Education (CERME)},
	address = {Lyon, France},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Durand-Guerrier, Viviane and Soury-Lavergne, Sophie and Arzarello, Ferdinando}
}
@article {743,
	title = {Virtuell-enaktives Arbeiten mit der "Kraft der F{\"u}nf"},
	journal = {MNU Primar},
	volume = {3},
	year = {2009},
	pages = {91-95},
	author = {Ladel, Silke and Kortenkamp, Ulrich}
}
@inbook {735,
	title = {Der Computer als {\"U}bungs- und Wiederholungsmedium im Mathematikunterricht - eine unterrichtliche Erprobung},
	booktitle = {Entdecken und {\"U}ben mit dem Computer},
	series = {Ausgew{\"a}hlte Unterrichtskonzepte in unterrichtlicher Erpobung},
	volume = {1},
	year = {2006},
	pages = {117-156},
	publisher = {Franzbecker},
	organization = {Franzbecker},
	edition = {Schw{\"a}bisch Gm{\"u}nder mathematikdidaktische Reihe},
	address = {Hildesheim, Berlin},
	author = {Beckmann, Astrid and Hole, Volker and Kittel, Andreas and Ladel, Silke},
	editor = {Beckmann, Astrid}
}
@article {733,
	title = {The Computers as "an exercise and repetition" medium in mathematics lessons: Educational Effectiveness of Tablet PCs},
	journal = {ZDM Mathematics Education},
	volume = {37},
	year = {2005},
	month = {Oktober},
	pages = {379-394},
	author = {Kittel, Andreas and Beckmann, Astrid and Hole, Volker and Ladel, Silke}
}
@inbook {732,
	title = {Tablet-PCs im Mathematikunterricht - eine unterrichtliche Erprobung},
	booktitle = {Beitr{\"a}ge zum Mathematikunterricht 2005 - Beitr{\"a}ge zur 39. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik vom 28.2. bis 4.3.2005 in Bielefeld},
	year = {2005},
	pages = {299-303},
	publisher = {Franzbecker},
	organization = {Franzbecker},
	address = {Hildesheim},
	author = {Kittel, Andreas and Hole, Volker and Ladel, Silke and Beckmann, Astrid},
	editor = {Graumann, G{\"u}nter}
}
