39. A teacher is designing a lesson to cover the standard

Answer: C

Explanation:

Split students into groups to explore division strategies

Grouping students to explore division strategies encourages collaboration and active learning. This approach allows students to engage with the material through discussion and peer support, which can enhance their understanding of the long division process.

A) Divide multi-digit integers by one-digit integers using standard long division.

This option describes the content of the lesson rather than an instructional strategy. While it outlines what students will learn, it does not provide an effective means to introduce the material or engage students in the learning process.

B) Use peer teaching to allow students to share division approaches

While peer teaching is beneficial, it may not be the most efficient strategy for introducing new information. It relies on students already having some understanding of the concepts, which may not be the case at the beginning of the lesson.

D) Break up the content clearly in a carefully planned lecture

Although a well-structured lecture can be informative, it may not actively involve students in the learning process. This method can lead to passive learning, which might not be as effective in helping students grasp the concept of long division.

E) Have students develop custom long division manipulatives

Creating manipulatives can be a valuable hands-on activity, but it may not directly address the immediate need to introduce the concept of long division effectively. This strategy could be more suitable as a follow-up activity rather than an initial instructional method.

Conclusion

Selecting option C is the most effective choice as it promotes student collaboration and exploration, which are crucial for understanding complex concepts like long division. Other options either focus on content delivery rather than engagement or suggest methods that are less effective for initial instruction. This approach fosters a deeper understanding of division strategies through shared learning experiences.