The article is on the integration of case-based reasoning to problem-based learning, it is an example to a merging of them. Examples of science instruction can be found and CBR in detail is explained by Kolodner and her colleagues.
Sammamish High School in the US decided to change from traditional teaching to an entirely problem-based curriculum. Since Kolodner et al. (2009) married Case-Based Reasoning to Problem-Based Learning, I thought it would be useful to see PBL in practice.