Question 30

Worked examples are effective because they reduce mental demands by modeling each step of problem-solving.

Worked examples serve to simplify the learning process by breaking down complex problems into manageable steps, thereby lessening the cognitive load on learners. This approach enables students to focus on understanding the problem-solving strategies rather than becoming overwhelmed by the task itself.

A) They reduce the need for guided practice or feedback.

This option is incorrect as worked examples do not eliminate the need for guided practice or feedback; rather, they serve as a complementary instructional strategy that can enhance understanding and retention. Guided practice and feedback are still essential for reinforcing learning and addressing misunderstandings.

B) They introduce complex tasks to challenge students early in instruction.

This choice is incorrect because worked examples are designed to simplify tasks rather than introduce complexity. They aim to make learning accessible by demonstrating problem-solving methods rather than confronting students with challenging tasks at the outset.

C) They promote independent discovery without structured support.

This statement is also incorrect. Worked examples provide structured support by illustrating the steps involved in problem-solving, which contrasts with the notion of promoting independent discovery. The effectiveness of worked examples relies on the guidance they offer, which facilitates learning rather than leaving students to figure things out on their own.

D) They reduce mental demands by modeling each step of problem-solving.

This option is correct as worked examples explicitly demonstrate the process of solving problems, which helps to reduce cognitive load. By providing clear models, they allow learners to internalize the steps necessary to reach a solution, thus making the learning process more efficient and less taxing on working memory.

Conclusion

In summary, option D is the only choice that accurately reflects the principles of cognitive load theory by highlighting how worked examples model problem-solving steps and reduce mental demands on learners. The other options misinterpret the role of worked examples, either by emphasizing independence or complexity, which are not aligned with their intended purpose of facilitating understanding through structured guidance.