Which strategy would best help improve the performance of Ms. Thompson's students after a testing error?

Offering additional study resources and support is a highly effective strategy for improving the performance of Ms. Thompson's students after a testing error. This approach directly addresses the gaps in knowledge or skills that may have contributed to the testing error, allowing students to reinforce their understanding of the material. By providing resources such as review materials, online tutorials, or access to tutoring, students can engage with the content in multiple ways, thus enhancing their learning and retention.

This strategy fosters a supportive learning environment where students feel encouraged to seek help and clarify any misunderstandings. It also empowers students to take ownership of their learning by giving them the tools necessary for improvement. Providing additional support can lead to increased confidence among students, which is crucial for their overall academic performance.