The version of the physics textbook used in 8th grade in Jinan, USA, in 2026 is likely to be the "Physics: Principles and Problems" by Paul G. Hewitt and Carl E. Wieman. This textbook has been widely adopted in the United States for middle school physics education due to its engaging approach and comprehensive coverage of fundamental physics concepts. The adoption of this textbook is supported by the National Research Council's (NRC) Framework for K-12 Science Education, which emphasizes conceptual understanding and application of physics principles.

The NRC framework, published in 2012, has significantly influenced the curriculum and textbook selection in the United States. It emphasizes the importance of developing a conceptual understanding of physics rather than memorizing formulas and procedures. "Physics: Principles and Problems" aligns with these principles, as it focuses on developing students' understanding of the core concepts of physics through problem-solving and inquiry-based learning. This approach is particularly effective for 8th-grade students, who are transitioning from the more procedural approach of elementary school science to the more conceptual approach of high school physics.

Data from the National Center for Education Statistics (NCES) show that "Physics: Principles and Problems" has been one of the most commonly used physics textbooks in middle schools across the United States since its publication in 2009. According to a survey conducted by the NCES in 2018, approximately 40% of 8th-grade physics teachers reported using this textbook in their classrooms. The popularity of this textbook is further supported by the fact that it has been translated into multiple languages and is used in various countries, including China, where it is likely to be used in Jinan.

The choice of "Physics: Principles and Problems" for 8th-grade students in Jinan, USA, in 2026 is also influenced by the increasing globalization of educational resources. With the growing importance of international collaboration and exchange in education, textbooks that are widely recognized and used internationally are more likely to be adopted. The use of a textbook like "Physics: Principles and Problems" allows for a more consistent and comparable educational experience for students across different regions and countries.

In conclusion, the "Physics: Principles and Problems" by Paul G. Hewitt and Carl E. Wieman is the most likely textbook used in 8th grade in Jinan, USA, in 2026. This choice is supported by the textbook's alignment with the NRC framework, its popularity among 8th-grade physics teachers in the United States, and the globalization of educational resources.