Krajcik pg54-71

I have always been a strong believer in the social constructivist model of teaching, and the Chinese proverb "Tell me, and I forget. Show me, and I remember. Involve me, and I understand." has long been a favorite of mine. This is how I best learned as a student, so it makes the most sense to me as a teacher. I also like the constructivist model of teaching because it addresses students' learning at all levels of Bloom's taxonomy. This alignment can be seen easily in comparing Dale's Cone of experience with Bloom's Taxonomy. As I was reading the article, I was able to clearly see which levels were being reached in Bloom's as the sample activities and lessons were described. For example, the base of Dale's cone - Direct Purposeful experiences - can be seen in the example about students investigating the question, "where does all our garbage go?" Rather than just learn about landfills and decomposition from books, videos or lectures, the students did a meaningful hands-on experiment which had multiple purposes and inspired continued learning (demonstrated by the new questions about worms and oxygen mentioned later in the article). Krajcik does a really great job of demonstrating how the constructivist model pushes students to Bloom's higher levels of learning.
The other thing I really like about how Krajcik presented this information is the "connecting to National Science Education Standards" boxes. For myself, as a teacher in training, I sometimes have a difficult time interpreting the education standards as they're given. Being able to connect the standard with a description of how to teach the concept and an example of a lesson that incorporates that teaching method and the standard is very helpful.
Overall, I really like this article. It's very helpful in understanding how the constructivist model of teaching works well in Science education. I have always thought of science as a hands-on, experiment-based subject, this article describes how science is taught from all levels, and more importantly, how to help students retain and synthesize the information.