Chieko Matsuyama Toyoshiro Nakashima Naohiro Ishii Animation Creation in Computer Software Programming Education and its Evaluation. 346-351 2005 conf/snpd/2005 SNPD http://doi.ieeecomputersociety.org/10.1109/SNPD-SAWN.2005.21 db/conf/snpd/snpd2005.html#MatsuyamaNI05