Tuesday, September 28, 2010

Learning Object - "Exploring the length of the shadow"


The learning object I reviewed is “Exploring the length of the shadow”. The learning object allows a student to explore the concept of shadow. It is good for grade 4-6 students to understand the relationship about sunlight and the shadow. It stimulates the formation of stick shadow under sunlight. A student also allows controlling the variables, such as, time of the day and height of the stick to observe their relations.



This learning object represents the real system of the formation of stick shadow under sunlight. It allows a student to explore by trial and error to operate the system and observe the charge of shadow under different time of the day. I think that it is an example of stimulation object under the learning object classification of Dr. Churchill (2007). There are several advantages of stimulation object in educational context. First, it allows a learner construct a mind model after exploration to the stimulation objects. Further, learning with stimulation object is particularly effective when the real system is expensive, unavailable or available in limited number, or learning to operate it is costly, possibly dangerous.(Churchill, 2007)




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