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<bibtex>
  
<nowiki><bibtex></nowiki>
 
  
@article{Etzold2010,
 
  
Author = {Etzold, Heiko and Frantzke, Anke},
 
  
Date-Added = {2017-04-21 09:23:54 +0000},
+
@article{Etzold2017b,
 +
Author = {Heiko Etzold},
 +
Date-Added = {2018-01-21 16:08:27 +0000},
 +
Date-Modified = {2018-01-21 16:08:54 +0000},
 +
Journal = {Von Ph{\"a}nomenen zu Begriffen und Strukturen -- Vortr{\"a}ge auf der 32. Herbsttagung des Arbeitskreises Geometrie in der Gesellschaft f{\"u}r Didaktik der Mathematik},
 +
Keywords = {Winkel},
 +
Pages = {35-44},
 +
Title = {Winkel aus der Sicht von Informationen},
 +
Year = {2017},
 +
Bdsk-File-1 = {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}}
  
Date-Modified = {2017-04-21 09:25:58 +0000},
 
  
Journal = {Mathematik lehren},
+
@article{Etzold2017a,
 +
Author = {Heiko Etzold and Ana Kuzle},
 +
Date-Added = {2017-04-21 09:58:51 +0000},
 +
Date-Modified = {2018-01-21 16:06:28 +0000},
 +
Journal = {Grundschulunterricht Mathematik},
 +
Number = {1},
 +
Pages = {29-32},
 +
Publisher = {Cornelsen Verlag, M{\"u}nchen},
 +
Title = {Klipp Klapp - W{\"u}rfelnetze einmal anders. Mit digitalen Medien das r{\"a}umliche Vorstellungsverm{\"o}gen f{\"o}rdern},
 +
Year = {2017}}
  
Number = {163},
+
@article{Etzold2016d,
 +
Author = {Heiko Etzold},
 +
Date-Added = {2017-04-21 10:06:53 +0000},
 +
Date-Modified = {2018-01-21 16:07:46 +0000},
 +
Editor = {Anna Susanne Steinweg},
 +
Journal = {Inklusiver Mathematikunterricht -- Mathematiklernen in ausgew{\"a}hlten F{\"o}rderschwerpunkten : Tagungsband des AK Grundschule in der GDM 2016},
 +
Pages = {81-84},
 +
Title = {Zahlverst{\"a}ndnis mit dem Tablet unterst{\"u}tzen},
 +
Year = {2016}}
  
Pages = {50-54},
+
@article{Etzold2016c,
 +
Author = {Heiko Etzold and Ines Petzschler},
 +
Date-Added = {2017-04-21 09:55:33 +0000},
 +
Date-Modified = {2018-01-21 16:07:32 +0000},
 +
Journal = {Praxis der Mathematik in der Schule},
 +
Number = {72},
 +
Pages = {30-33},
 +
Publisher = {Aulis-Verlag, Hallbergmoos},
 +
Title = {Die Kraft des F{\"u}nfecks. Argumentationsanl{\"a}sse f{\"u}r dynamische Betrachtungen},
 +
Volume = {58},
 +
Year = {2016}}
  
Publisher = {Friedrich Verlag, Seelze},
+
@article{Etzold2016b,
 +
Author = {Etzold, Heiko},
 +
Date-Added = {2017-04-21 10:02:37 +0000},
 +
Date-Modified = {2017-04-21 10:05:08 +0000},
 +
Editor = {Institut f{\"u}ur Mathematik und Informatik der P{\"a}dagogischen Hochschule Heidelberg},
 +
Journal = {Beitr{\"a}ge zum Mathematikunterricht 2016. Vortr{\"a}ge auf der 50. GDM Tagung f{\"u}r Didaktik der Mathematik. Band 1, 2 und 3.},
 +
Pages = {257-260},
 +
Publisher = {WTM-Verlag, M{\"u}nster},
 +
Title = {Neue Zug{\"a}nge zum Winkelbegriff -- Vorstellung eines Promotionsprojektes},
 +
Year = {2016}}
  
Title = {Weihnachts-Fermi-Fragen},
+
@article{Etzold2016a,
 +
Author = {Heiko Etzold},
 +
Date-Added = {2017-04-21 09:53:03 +0000},
 +
Date-Modified = {2018-01-21 16:07:54 +0000},
 +
Journal = {Grundschulunterricht Mathematik},
 +
Number = {3},
 +
Pages = {30-34},
 +
Publisher = {Cornelsen Verlag, M{\"u}nchen},
 +
Title = {Guck hier - guck dort. Das Klassenzimmer aus verschiedenen Blickwinkeln betrachtet},
 +
Year = {2016}}
  
<nowiki>Year = {2010}}</nowiki>
+
@article{Etzold2014c,
 
+
Author = {Etzold, Heiko and Petzschler, Ines},
 
+
Date-Added = {2017-04-21 09:26:59 +0000},
 
+
Date-Modified = {2017-04-21 09:27:43 +0000},
@book{Etzold2011,
+
Journal = {Mathematik lehren},
 
+
Number = {186},
Author = {Etzold, Heiko and Petzschler, Ines},
+
Pages = {6-9},
 
+
Publisher = {Friedrich Verlag, Seelze},
Date-Added = {2017-04-21 09:43:59 +0000},
+
Title = {Intelligentes {\"U}ben im Spiel},
 
+
Volume = {31},
Date-Modified = {2017-04-21 10:01:33 +0000},
+
Year = {2014}}
 
 
Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr},
 
 
 
Title = {Spiele zur Unterrichtsgestaltung. Mathematik},
 
 
 
<nowiki>Year = {2011}}</nowiki>
 
  
 +
@article{Etzold2014b,
 +
Author = {Etzold, Heiko and Krohn, Thomas and Petzschler, Ines and Sch{\"o}neburg, Silvia},
 +
Date-Added = {2017-04-21 09:28:26 +0000},
 +
Date-Modified = {2017-04-21 09:29:00 +0000},
 +
Journal = {Mathematik lehren},
 +
Number = {186},
 +
Pages = {pull-out section, 16 p.},
 +
Publisher = {Friedrich Verlag, Seelze},
 +
Title = {MatheWelt. Eine Stadt von allen Seiten.},
 +
Volume = {31},
 +
Year = {2014}}
  
 +
@book{Etzold2014a,
 +
Author = {Etzold, Heiko and Petzschler, Ines},
 +
Date-Added = {2017-04-21 09:46:32 +0000},
 +
Date-Modified = {2017-04-21 09:47:02 +0000},
 +
Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr},
 +
Title = {Mathe verstehen durch Papierfalten: Anleitungen und Arbeitsbl{\"a}tter f{\"u}r die Sekundarstufe},
 +
Year = {2014}}
  
 
@book{Etzold2013,
 
@book{Etzold2013,
 +
Author = {Etzold, Heiko and Petzschler, Ines},
 +
Date-Added = {2017-04-21 09:45:07 +0000},
 +
Date-Modified = {2017-04-21 09:46:05 +0000},
 +
Publisher = {Edika, Brno},
 +
Title = {N{\'a}padn{\'\i}k aktivit a her do hodin matematiky},
 +
Year = {2013}}
  
Author = {Etzold, Heiko and Petzschler, Ines},
+
@book{Etzold2011,
 +
Author = {Etzold, Heiko and Petzschler, Ines},
 +
Date-Added = {2017-04-21 09:43:59 +0000},
 +
Date-Modified = {2017-04-21 10:01:33 +0000},
 +
Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr},
 +
Title = {Spiele zur Unterrichtsgestaltung. Mathematik},
 +
Year = {2011}}
  
Date-Added = {2017-04-21 09:45:07 +0000},
+
@article{Etzold2010,
 
+
Author = {Etzold, Heiko and Frantzke, Anke},
Date-Modified = {2017-04-21 09:46:05 +0000},
+
Date-Added = {2017-04-21 09:23:54 +0000},
 
+
Date-Modified = {2017-04-21 09:25:58 +0000},
Publisher = {Edika, Brno},
+
Journal = {Mathematik lehren},
 
+
Number = {163},
Title = {N{\'a}padn{\'\i}k aktivit a her do hodin matematiky},
+
Pages = {50-54},
 
+
Publisher = {Friedrich Verlag, Seelze},
<nowiki>Year = {2013}}</nowiki>
+
Title = {Weihnachts-Fermi-Fragen},
 
+
Year = {2010}}
 
+
</bibtex>
 
 
@book{Etzold2014a,
 
 
 
Author = {Etzold, Heiko and Petzschler, Ines},
 
 
 
Date-Added = {2017-04-21 09:46:32 +0000},
 
 
 
Date-Modified = {2017-04-21 09:47:02 +0000},
 
 
 
Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr},
 
 
 
Title = {Mathe verstehen durch Papierfalten: Anleitungen und Arbeitsbl{\"a}tter f{\"u}r die Sekundarstufe},
 
 
 
<nowiki>Year = {2014}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2014b,
 
 
 
Author = {Etzold, Heiko and Krohn, Thomas and Petzschler, Ines and Sch{\"o}neburg, Silvia},
 
 
 
Date-Added = {2017-04-21 09:28:26 +0000},
 
 
 
Date-Modified = {2017-04-21 09:29:00 +0000},
 
 
 
Journal = {Mathematik lehren},
 
 
 
Number = {186},
 
 
 
Pages = {pull-out section, 16 p.},
 
 
 
Publisher = {Friedrich Verlag, Seelze},
 
 
 
Title = {MatheWelt. Eine Stadt von allen Seiten.},
 
 
 
Volume = {31},
 
 
 
<nowiki>Year = {2014}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2014c,
 
 
 
Author = {Etzold, Heiko and Petzschler, Ines},
 
 
 
Date-Added = {2017-04-21 09:26:59 +0000},
 
 
 
Date-Modified = {2017-04-21 09:27:43 +0000},
 
 
 
Journal = {Mathematik lehren},
 
 
 
Number = {186},
 
 
 
Pages = {6-9},
 
 
 
Publisher = {Friedrich Verlag, Seelze},
 
 
 
Title = {Intelligentes {\"U}ben im Spiel},
 
 
 
Volume = {31},
 
 
 
<nowiki>Year = {2014}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2016a,
 
 
 
Author = {Heiko Etzold},
 
 
 
Date-Added = {2017-04-21 09:53:03 +0000},
 
 
 
Date-Modified = {2018-01-21 16:07:54 +0000},
 
 
 
Journal = {Grundschulunterricht Mathematik},
 
 
 
Number = {3},
 
 
 
Pages = {30-34},
 
 
 
Publisher = {Cornelsen Verlag, M{\"u}nchen},
 
 
 
Title = {Guck hier - guck dort. Das Klassenzimmer aus verschiedenen Blickwinkeln betrachtet},
 
 
 
<nowiki>Year = {2016}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2016b,
 
 
 
Author = {Etzold, Heiko},
 
 
 
Date-Added = {2017-04-21 10:02:37 +0000},
 
 
 
Date-Modified = {2017-04-21 10:05:08 +0000},
 
 
 
Editor = {Institut f{\"u}ur Mathematik und Informatik der P{\"a}dagogischen Hochschule Heidelberg},
 
 
 
Journal = {Beitr{\"a}ge zum Mathematikunterricht 2016. Vortr{\"a}ge auf der 50. GDM Tagung f{\"u}r Didaktik der Mathematik. Band 1, 2 und 3.},
 
 
 
Pages = {257-260},
 
 
 
Publisher = {WTM-Verlag, M{\"u}nster},
 
 
 
Title = {Neue Zug{\"a}nge zum Winkelbegriff -- Vorstellung eines Promotionsprojektes},
 
 
 
<nowiki>Year = {2016}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2016c,
 
 
 
Author = {Heiko Etzold and Ines Petzschler},
 
 
 
Date-Added = {2017-04-21 09:55:33 +0000},
 
 
 
Date-Modified = {2018-01-21 16:07:32 +0000},
 
 
 
Journal = {Praxis der Mathematik in der Schule},
 
 
 
Number = {72},
 
 
 
Pages = {30-33},
 
 
 
Publisher = {Aulis-Verlag, Hallbergmoos},
 
 
 
Title = {Die Kraft des F{\"u}nfecks. Argumentationsanl{\"a}sse f{\"u}r dynamische Betrachtungen},
 
 
 
Volume = {58},
 
 
 
<nowiki>Year = {2016}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2016d,
 
 
 
Author = {Heiko Etzold},
 
 
 
Date-Added = {2017-04-21 10:06:53 +0000},
 
 
 
Date-Modified = {2018-01-21 16:07:46 +0000},
 
 
 
Editor = {Anna Susanne Steinweg},
 
 
 
Journal = {Inklusiver Mathematikunterricht -- Mathematiklernen in ausgew{\"a}hlten F{\"o}rderschwerpunkten : Tagungsband des AK Grundschule in der GDM 2016},
 
 
 
Pages = {81-84},
 
 
 
Title = {Zahlverst{\"a}ndnis mit dem Tablet unterst{\"u}tzen},
 
 
 
<nowiki>Year = {2016}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2017a,
 
 
 
Author = {Heiko Etzold and Ana Kuzle},
 
 
 
Date-Added = {2017-04-21 09:58:51 +0000},
 
 
 
Date-Modified = {2018-01-21 16:06:28 +0000},
 
 
 
Journal = {Grundschulunterricht Mathematik},
 
 
 
Number = {1},
 
 
 
Pages = {29-32},
 
 
 
Publisher = {Cornelsen Verlag, M{\"u}nchen},
 
 
 
Title = {Klipp Klapp - W{\"u}rfelnetze einmal anders. Mit digitalen Medien das r{\"a}umliche Vorstellungsverm{\"o}gen f{\"o}rdern},
 
 
 
<nowiki>Year = {2017}}</nowiki>
 
 
 
 
 
 
 
@article{Etzold2017b,
 
 
 
Author = {Heiko Etzold},
 
 
 
Date-Added = {2018-01-21 16:08:27 +0000},
 
 
 
Date-Modified = {2018-01-21 16:08:54 +0000},
 
 
 
Journal = {Von Ph{\"a}nomenen zu Begriffen und Strukturen -- Vortr{\"a}ge auf der 32. Herbsttagung des Arbeitskreises Geometrie in der Gesellschaft f{\"u}r Didaktik der Mathematik},
 
 
 
Keywords = {Winkel},
 
 
 
Pages = {35-44},
 
 
 
Title = {Winkel aus der Sicht von Informationen},
 
 
 
Year = {2017},
 
 
 
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<nowiki></bibtex></nowiki>
 

Version vom 3. März 2018, 16:37 Uhr

<bibtex>



@article{Etzold2017b, Author = {Heiko Etzold}, Date-Added = {2018-01-21 16:08:27 +0000}, Date-Modified = {2018-01-21 16:08:54 +0000}, Journal = {Von Ph{\"a}nomenen zu Begriffen und Strukturen -- Vortr{\"a}ge auf der 32. Herbsttagung des Arbeitskreises Geometrie in der Gesellschaft f{\"u}r Didaktik der Mathematik}, Keywords = {Winkel}, Pages = {35-44}, Title = {Winkel aus der Sicht von Informationen}, Year = {2017}, Bdsk-File-1 = {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}}


@article{Etzold2017a, Author = {Heiko Etzold and Ana Kuzle}, Date-Added = {2017-04-21 09:58:51 +0000}, Date-Modified = {2018-01-21 16:06:28 +0000}, Journal = {Grundschulunterricht Mathematik}, Number = {1}, Pages = {29-32}, Publisher = {Cornelsen Verlag, M{\"u}nchen}, Title = {Klipp Klapp - W{\"u}rfelnetze einmal anders. Mit digitalen Medien das r{\"a}umliche Vorstellungsverm{\"o}gen f{\"o}rdern}, Year = {2017}}

@article{Etzold2016d, Author = {Heiko Etzold}, Date-Added = {2017-04-21 10:06:53 +0000}, Date-Modified = {2018-01-21 16:07:46 +0000}, Editor = {Anna Susanne Steinweg}, Journal = {Inklusiver Mathematikunterricht -- Mathematiklernen in ausgew{\"a}hlten F{\"o}rderschwerpunkten : Tagungsband des AK Grundschule in der GDM 2016}, Pages = {81-84}, Title = {Zahlverst{\"a}ndnis mit dem Tablet unterst{\"u}tzen}, Year = {2016}}

@article{Etzold2016c, Author = {Heiko Etzold and Ines Petzschler}, Date-Added = {2017-04-21 09:55:33 +0000}, Date-Modified = {2018-01-21 16:07:32 +0000}, Journal = {Praxis der Mathematik in der Schule}, Number = {72}, Pages = {30-33}, Publisher = {Aulis-Verlag, Hallbergmoos}, Title = {Die Kraft des F{\"u}nfecks. Argumentationsanl{\"a}sse f{\"u}r dynamische Betrachtungen}, Volume = {58}, Year = {2016}}

@article{Etzold2016b, Author = {Etzold, Heiko}, Date-Added = {2017-04-21 10:02:37 +0000}, Date-Modified = {2017-04-21 10:05:08 +0000}, Editor = {Institut f{\"u}ur Mathematik und Informatik der P{\"a}dagogischen Hochschule Heidelberg}, Journal = {Beitr{\"a}ge zum Mathematikunterricht 2016. Vortr{\"a}ge auf der 50. GDM Tagung f{\"u}r Didaktik der Mathematik. Band 1, 2 und 3.}, Pages = {257-260}, Publisher = {WTM-Verlag, M{\"u}nster}, Title = {Neue Zug{\"a}nge zum Winkelbegriff -- Vorstellung eines Promotionsprojektes}, Year = {2016}}

@article{Etzold2016a, Author = {Heiko Etzold}, Date-Added = {2017-04-21 09:53:03 +0000}, Date-Modified = {2018-01-21 16:07:54 +0000}, Journal = {Grundschulunterricht Mathematik}, Number = {3}, Pages = {30-34}, Publisher = {Cornelsen Verlag, M{\"u}nchen}, Title = {Guck hier - guck dort. Das Klassenzimmer aus verschiedenen Blickwinkeln betrachtet}, Year = {2016}}

@article{Etzold2014c, Author = {Etzold, Heiko and Petzschler, Ines}, Date-Added = {2017-04-21 09:26:59 +0000}, Date-Modified = {2017-04-21 09:27:43 +0000}, Journal = {Mathematik lehren}, Number = {186}, Pages = {6-9}, Publisher = {Friedrich Verlag, Seelze}, Title = {Intelligentes {\"U}ben im Spiel}, Volume = {31}, Year = {2014}}

@article{Etzold2014b, Author = {Etzold, Heiko and Krohn, Thomas and Petzschler, Ines and Sch{\"o}neburg, Silvia}, Date-Added = {2017-04-21 09:28:26 +0000}, Date-Modified = {2017-04-21 09:29:00 +0000}, Journal = {Mathematik lehren}, Number = {186}, Pages = {pull-out section, 16 p.}, Publisher = {Friedrich Verlag, Seelze}, Title = {MatheWelt. Eine Stadt von allen Seiten.}, Volume = {31}, Year = {2014}}

@book{Etzold2014a, Author = {Etzold, Heiko and Petzschler, Ines}, Date-Added = {2017-04-21 09:46:32 +0000}, Date-Modified = {2017-04-21 09:47:02 +0000}, Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr}, Title = {Mathe verstehen durch Papierfalten: Anleitungen und Arbeitsbl{\"a}tter f{\"u}r die Sekundarstufe}, Year = {2014}}

@book{Etzold2013, Author = {Etzold, Heiko and Petzschler, Ines}, Date-Added = {2017-04-21 09:45:07 +0000}, Date-Modified = {2017-04-21 09:46:05 +0000}, Publisher = {Edika, Brno}, Title = {N{\'a}padn{\'\i}k aktivit a her do hodin matematiky}, Year = {2013}}

@book{Etzold2011, Author = {Etzold, Heiko and Petzschler, Ines}, Date-Added = {2017-04-21 09:43:59 +0000}, Date-Modified = {2017-04-21 10:01:33 +0000}, Publisher = {Verlag an der Ruhr, M{\"u}lheim an der Ruhr}, Title = {Spiele zur Unterrichtsgestaltung. Mathematik}, Year = {2011}}

@article{Etzold2010, Author = {Etzold, Heiko and Frantzke, Anke}, Date-Added = {2017-04-21 09:23:54 +0000}, Date-Modified = {2017-04-21 09:25:58 +0000}, Journal = {Mathematik lehren}, Number = {163}, Pages = {50-54}, Publisher = {Friedrich Verlag, Seelze}, Title = {Weihnachts-Fermi-Fragen}, Year = {2010}} </bibtex>