Question 82

The focus of the lesson is most likely on adding by counting on.

The lesson is primarily centered around the strategy of adding by counting on, which is a foundational concept in arithmetic that helps learners understand addition through a progressive counting approach.

A) Subtracting by taking away

This option is incorrect as the lesson does not focus on subtraction strategies. Subtracting by taking away pertains to understanding subtraction as removing quantities, which is not the primary focus of the lesson outlined.

B) Subtracting when the change is unknown

This choice is also incorrect because it addresses a specific subtraction scenario rather than addition. The focus of the lesson is aimed at addition strategies, making this option irrelevant to the lesson's objective.

C) Adding by counting on

This option is correct and aligns with the lesson's focus. Adding by counting on involves starting from a number and counting up to find the total, which is an essential strategy in developing addition skills.

D) Adding when one of the parts is unknown

While this option relates to addition, it describes a different context known as part-part-whole relationships. The lesson does not emphasize this strategy, making this option less relevant compared to adding by counting on.

Conclusion

The correct answer is C, as the lesson emphasizes adding by counting on, a critical strategy in arithmetic that facilitates a deeper understanding of addition. Other options either pertain to subtraction or represent different addition scenarios that are not the main focus of the lesson. Thus, C stands out as the most relevant strategy being taught.