EPSY201 is a great course in learning educational psychology theories by working as groups. There are several principal issues that I learned related to theories of development, theories of learning, and models of instruction. This discipline offers valuable insights pertaining to teaching and learning. The most impressive theory for me should be the Piaget’s cognitive learning theory (CLT), which viewed learning as an active mental process of acquiring, remembering, and using knowledge. Learning is evidenced by a change in knowledge which makes a change in behavior possible. Learning itself is not directly observable. It inspired parents and teachers need intellectual empathy for the developmental nature of the mental capabilities of children. This course also introduced the systematical research methodology, which is super helpful in understanding a scientific research design. Specifically, a scientific research method should contain the process of posing question, setting up hypotheses, designing investigation, collecting data, analyzing data and sharing results. To practice, our group designed an experiment of testing learning ability of children in different age groups. We randomly select kids in age 0-5, 5-10, 10-15 and 15-20 and give them testing questions with corresponding difficulties as well as instructive hints. What we’ve found through the experiment is, the age group with the best learning ability is group 10-15. It seems like they can gain the most from our hints provided. We also learned that Learning is a process of relating latest information to previously learned information and involving the formation of mental associations that are not necessarily reflected in overt behavior changes.  All midterms in EPSY201 are group work which requires both of your solid course knowledge and teamwork skills. We are all randomly assigned into groups of four. I feel like I did a great job in playing roles as a coordinator because I can also eliminate the conflicts when there are different ideas toward the same problem. I always believe that a good cooperation needs to minimize the conflicts as possible as we can.