Research On The Effects Of Learning From Different Sorts Of Worked Example On Chemistry

Worked example is very important as a teaching tool. It can reduce students' cognitive load and improve learning efficiency. However, many teachers have difficulty on how to choose proper worked example.This research mainly aims at the learners' learning effects with different sorts of the worked examples of chemistry. We've studied the examples of grade two students in senior middle school by approaches of literature study and demonstration study.The results shows: 1. The explanation of sub-goal model is clear, but thinking of students is limited in certain extent. Research model emphasize thought-provoked and self-explanation, but the process is complex that needs to improve. 2. During learning factual knowledge sub-goal model is superior. During learning procedural knowledge research model is superior. 3. Sub-goal model is superior when top and medium students learn factual knowledge, and research model is better when they learn procedural knowledge. 4. Sub-goal model and research model are both inefficient when inferior students learn factual knowledge. Research model is superior when inferior students learn procedural knowledge. 5. Research model can improve self-explanation and confirm the preinstall problem. The criterion of the questions of research model is multiplicity and logic. The experiment provided the teaching method of learning from worked example in chemistry teaching with some proof and advice.