Hintergrund

==Literatur==
[Ab09]	Abelson, H.: App Inventor for Android. In Google Research Blog, July 31, 2009.<br>
[AHS96]	Ackermann, S.; Hartmann, W.; Stumm, M.: Unterrichtsmaterial über WWW. In LOG IN 16(1), 1996; S. 61-68.<br>
[AK09]	Ali, A.; Kohun, F. G.: Considerations for selecting a programming language to teach perspective teachers. Proc. Alice Symposium, 2009.<br>
[AH07]	Arnold, R.; Hartmann, W.: Pragmatische Empfehlungen zur Entwicklung von interaktiven Lernumgebungen. Proc. INFOS 2007, 12. GI-Fachtagung Informatik und Schule, 2007.<br>
[Bo05]	Boles, D.: Spielerisches Erlernen der Programmierung mit dem Java-Hamster-Modell. In Lecture Notes in Informatics (LNI)-Proceedings 60, 2005; S. 243-252.<br>
[CDP00]	Cooper, S.; Dann, W.; Pausch, R.: Alice: a 3-D tool for introductory programming concepts. Proceedings of the fifth annual CCSC northeastern conference on The journal of computing in small colleges. Ramapo College of New Jersey, Mahwah, New Jersey, United States, Consortium for Computing Sciences in Colleges, 2000.<br>
[DHL08]	Denny, P.; Hamer, J.; Luxton-Reilly, A.; Purchase, H.: PeerWise. Proceedings of the 8th International Conference on Computing Education Research. Koli, Finland, ACM, 2008.<br>
[Do07]	Dohmen, M.: Empirisches Untersuchungsdesign zum Medieneinsatz im objektorientierten Informatikunterricht Proc. Didaktik der Informatik in Theorie und Praxis, INFOS 2007, 12. GI-Fachtagung Informatik und Schule, Siegen, GI, 2007.<br>
[GP05]	Gross, P.; Powers, K.: Evaluating assessments of novice programming environments. Proc., ACM, 2005.<br>
[GP06]	Gross, P.; Powers, K.: Work in progress-a meta-study of software tools for introductory programming. Proc., IEEE, 2006.<br>
[Gu04]	Guzdial, M.: Programming environments for novices. In Computer science education research, 2004; S. 127-154.<br>
[HDS02]	Hundhausen, C. D.; Douglas, S. A.; Stasko, J. T.: A Meta-Study of Algorithm Visualization Effectiveness. In Journal of Visual Languages & Computing 13(3), 2002; S. 259-290.<br>
[KPN08]	Kasurinen, J.; Purmonen, M.; Nikula, U.: A Study of Visualization in Introductory Programming. Proc. 20th annual Meeting of Psychology of Programming Interest Group, Lancaster, UK, 2008.<br>
[KP05]	Kelleher, C.; Pausch, R.: Lowering the barriers to programming: A Taxonomy of Programming Environments and Languages for Novice Programmers. In ACM Computing Surveys 37(2), 2005; S. 83-137.<br>
[Ko06]	Kohl, L.: Puck-eine visuelle Programmiersprache für die Schule. In informatica didactica 8(7), 2006.<br>
[Kö08]	Kölling, M.: Greenfoot: a highly graphical ide for learning object-oriented programming. Proc., ACM, 2008.<br>
[Ko06]	Koubek, J.: Das Gutachtersystem als asynchrone nicht-kooperative Lernumgebung. Proc. Grundfragen multimedialen Lehrens und Lernens, 2006.<br>
[LSI98]	LEGO_SYSTEMS_INC.: Lego Mindstorms Robotics Invention System. 1998. http://mindstorms.lego.com <br>
[Ma04]	Maloney, B., Kafai, Rusk, Silverman, Resnick: Scratch: A Sneak Preview. In IEEE Computer Society, 2004; S. 104 - 109.<br>
[My90]	Myers, B. A.: Taxonomies of visual programming and program visualization. In J. Vis. Lang. Comput. 1(1), 1990; S. 97-123.<br>
[NRA02]	Naps, T. L.; Rößling, G.; Almstrum, V.; Dann, W.; Fleischer, R.; Hundhausen, C.; Korhonen, A.; Malmi, L.; McNally, M.; Rodger, S.; Velazquez-Iturbide, J. A.: Exploring the role of visualization and engagement in computer science education. Working group reports from ITiCSE on Innovation and technology in computer science education. Aarhus, Denmark, ACM, 2002.<br>
[Ne09]	Nesbit, T.: The Teaching of Introductory Programming: Issues of Context. In, 2009.<br>
[Pa80]	Papert, S.: Mindstorms : children, computers, and powerful ideas. Basic Books, New York, 1980.<br>
[Pa81]	Pattis, R. E.: Karel the robot: a gentle introduction to the art of programming. John Wiley & Sons, 1981.<br>
[PSM07]	Pears, A.; Seidman, S.; Malmi, L.; Mannila, L.; Adams, E.; Bennedsen, J.; Devlin, M.; Paterson, J.: A survey of literature on the teaching of introductory programming. Working group reports on ITiCSE on Innovation and technology in computer science education. Dundee, Scotland, ACM, 2007.<br>
[Pi11]	pixlr.com: pixlr photo editing services. 2011. http://pixlr.com (15.01.2011).<br>
[RNH04]	Reichert, R.; Nievergelt, J.; Hartmann, W.: Programmieren mit Kara: ein spielerischer Zugang zur Informatik. Springer, 2004.<br>
[Re96]	Resnick, M.: StarLogo: an environment for decentralized modeling and decentralized thinking. Proc., ACM, 1996.<br>
[Re07]	Resnick, M.: Sowing the Seeds for a More Creative Society. Proc. Learning & Leading with Technology, International Society for Technology in Education (ISTE), 2007.<br>
[Ro09]	Romeike, R.: Softwaretools für kreatives Lernen im Informatikunterricht. In Tagungsband zur GI-Fachtagung Informatik und Schule INFOS Berlin, 2009.<br>
[SBB06]	Schaffert, S.; Bischof, D.; Bürger, T.; Gruber, A.; Hilzensauer, W.: Learning with semantic wikis. Proc. First Workshop on Semantic Wikis -- From Wiki To Semantics, Citeseer, 2006.<br>
[St06]	Stechert, P.: Unterrichtsmodellentwicklung zur Förderung des Informatiksystemverständnisses mit Entwurfsmustern. Proc. Workshop der GI-Fachgruppe „Didaktik der Informatik", 2006.<br>
[SE11]	SwissEduc: Informationen über SwissEduc. 2011. http://www.swisseduc.ch/about/geschichte/index.html <br>
[US01]	Universität_Siegen: LEO - Lernumgebung für objektorientiertes Modellieren im Informatikunterricht. 2001. http://www.die.informatik.uni-siegen.de/pgleo (15.01.2011).<br>
[Va04]	Valentine, D. W.: CS educational research: a meta-analysis of SIGCSE technical symposium proceedings. In SIGCSE Bull. 36(1), 2004; S. 255-259.<br>