How Does a Flashlight Work — Reading Comprehension

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NGSS 4-PS3-2

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This 250-word informational reading passage helps Grade 4 students understand energy transformation through the familiar example of a flashlight. Aligned with NGSS standards PS3.A, PS3.B, and PS3.D, the passage walks students through each step of energy conversion: from chemical energy stored in batteries to electrical energy flowing through circuits to light energy and thermal energy produced by the bulb. Students learn how pressing a switch closes a circuit and how a reflector directs light into a beam. The passage uses simple, age-appropriate language and concrete examples to build foundational understanding of energy chains and transformations. Audio-integrated features support diverse learners, including English language learners and students with reading challenges. The passage includes bolded vocabulary terms with immediate definitions, helping students master key concepts like chemical energy, electrical energy, circuit, and thermal energy. Supplementary activities include multiple-choice comprehension questions, writing prompts that ask students to explain and apply concepts, and graphic organizers that help visualize the sequence of energy transformations. This resource provides teachers with a complete instructional package for introducing energy conversion concepts in an engaging, accessible way that meets NGSS disciplinary core ideas for elementary physical science education.

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