Analog vs. Digital Signals in Technology Phenomena-Based Lesson: Why Does a Scratched Record Crackle, but a Stream Stays Clear? Presentation | Middle School Physical Science | Grades 6–8
Analog vs. Digital Signals in Technology Phenomena-Based Lesson: Why Does a Scratched Record Crackle, but a Stream Stays Clear? Presentation | Middle School Physical Science | Grades 6–8
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This is the student-facing slide presentation that introduces the phenomenon, walks the class through observations and driving questions, and frames the evidence students will use for the Phenomena-Based Lesson in the Middle School Physical Science (grades 6–8) chapter Analog vs. Digital Signals in Technology, built around the phenomenon Why Does a Scratched Record Crackle, but a Stream Stays Clear?. It is sold separately from the other two parts of the set.
Complete the set: Analog vs. Digital Signals in Technology Phenomena-Based Lesson: Why Does a Scratched Record Crackle, but a Stream Stays Clear? Teacher Discussion Guide; Analog vs. Digital Signals in Technology Phenomena-Based Lesson: Why Does a Scratched Record Crackle, but a Stream Stays Clear? Student Response Sheet. Scaffolded version: Analog vs. Digital Signals in Technology Scaffolded Phenomena-Based Lesson: Why Does a Record Crackle? Presentation.
Sections: Part 1: Science Goals For Today; NGSS Part; What Students Do Today; Part 2: Central Mystery And The Question; Part 3: Class Talk Prompts; Talk Move; What To Ask; Common Guess. Sample item: “In contrast, playing the same song as a digital stream on a phone sounds the same after a million plays with no added noise. Why are digital signals better than analog signals for saving and sending i”
What's inside: Student Slide Show (editable .pptx + PDF, 22 slides).
Standards: NGSS Middle School Physical Science (MS-PS) disciplinary core ideas and the science practices of analyzing data and constructing explanations.
Resource type: Phenomena-Based Lesson – Presentation. Format: editable Microsoft PowerPoint file plus a ready-to-print PDF.
Classroom use: Open with the phenomenon slide show, let students record ideas on the response sheet, and lead the discussion with the teacher guide. Built for Middle School Physical Science, grades 6–8.
Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.