Unit 5 — Types of Interactions

• Students conduct an investigation and evaluate an experimental design to produce data that can serve as the basis for evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.
• Students identify the cause-and-effect relationships between fields that exist between objects and the behavior of the objects.
• Students ask questions about data to determine the effect of the strength of electric and magnetic forces that can be investigated within the scope of the classroom, outdoor environment, and museums and other public facilities with available resources.
• Students construct and present oral and written arguments supported by empirical evidence and scientific reasoning to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.
• Students use models to represent the gravitational interactions between two masses.

Students design a 3D maze game that incorporates numerous forces, including electric, magnetic, and gravitational forces

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Students may demonstrate understanding through a teacher-led interview or oral explanation of how gravitational, electrical, and magnetic forces work, supported by visual models or diagrams. Simplified investigation tasks with reduced variables, pre-made data tables, or direct observation recording in place of independent experimental design may be provided.

During investigations involving gravitational, electric, and magnetic forces, provide students with graphic organizers that scaffold cause-and-effect relationships between fields and object behavior, reducing the cognitive load of tracking multiple variables at once. Offer sentence frames for oral and written arguments so students can focus on demonstrating scientific reasoning rather than struggling with output. Allow students to demonstrate understanding of force interactions through labeled diagrams, verbal explanations, or physical models as alternatives to extended written responses, and provide step-by-step direction cards during hands-on investigations to support independent task completion.

Ensure students have extended time during investigations and when constructing written or oral arguments about gravitational, electric, and magnetic forces. Preferential seating near demonstration areas supports full access to visual and hands-on components of force and field investigations. Provide printed copies of directions and data tables so students can focus attention on the science rather than copying or tracking verbal instructions during multi-step activities.

Build vocabulary for key terms related to force, attraction, repulsion, and fields using visual word walls, labeled diagrams, and bilingual glossaries where possible, so students can engage with the content concepts before encountering them in dense text. Use physical demonstrations and visual models of gravitational, electric, and magnetic interactions to make abstract ideas about fields more concrete and accessible. Simplify written directions for investigations into short, clear steps, and allow students to discuss observations with a partner who shares their home language before contributing to whole-class discussions.

Connect new concepts about gravitational, electric, and magnetic forces to familiar everyday experiences — such as magnets on a refrigerator or the pull felt when dropping an object — to activate prior knowledge and lower entry barriers. Break multi-step investigations into smaller, clearly sequenced tasks with frequent check-ins so students can experience early success and build confidence before tackling more complex cause-and-effect reasoning. Provide partially completed data tables and argument frames to reduce the complexity of recording and organizing evidence without removing the scientific thinking required.

Challenge students to investigate the mathematical relationships between distance, mass, or charge and the strength of gravitational, electric, or magnetic forces, moving beyond qualitative descriptions toward quantitative reasoning. Encourage students to design original experimental questions that extend beyond classroom resources, such as proposing investigations that could be conducted in different environments or at larger scales, and to critically evaluate the limitations of the models used to represent fields. Students may also explore real-world engineering applications — such as magnetic levitation or satellite orbits — that require integrating multiple force types, connecting unit concepts to broader interdisciplinary and societal contexts.