Analog Data
Summary
Materials
Instructional Activities and Classroom Assessments
- What is Analog Data? (10 minutes)
- Digital Audio Sampling (12 minutes)
- Debrief (5 minutes)
- Audio Activity (10 minutes)
- Debrief (5 minutes)
- Intro to Hex and Colors (5 mins)
Learning Objectives
- DAT 1-A Explain how data can be represented using bits.
Essential Knowledge
- DAT-1.A.6 Bits are grouped to represent abstractions. These abstractions include, but are not limited to, numbers, characters, and color.
- DAT-1.A.7 The same sequence of bits may represent different types of data in different contexts.
- DAT-1.A.8 Analog data have values that change smoothly, rather than in discrete intervals, over time. Some examples of analog data include pitch and volume of music, colors of a painting, or position of a sprinter during a race.
- DAT-1.A.9 The use of digital data to approximate real-world analog data is an example of abstraction.
- DAT-1.A.10 Analog data can be closely approximated digitally using a sampling technique, which means measuring values of the analog signal at regular intervals called samples. The samples are measured to figure out the exact bits required to store each sample.
Details
1. What is Analog Data? (10 minutes)
- Define Analog Data.
- Explain the differences between analog and data.
2. Digital Audio Video (12 minutes)
- Play video
3. Debrief (5 minutes)
- Discuss the key concepts from the video.
- Answer the questions.
4. Audio Activity (10 minutes)
- Direct students to Audacity.
- Have students record or import an audio file.
- Have students increase the view and modify the speed.
5. Debrief (5 minutes)
- Discuss what students observed.
6. Hexadecimal Colors (5 minutes)
- Discuss RGB color system.
- Let students know they will learn more about hex tomorrow.