1. Sending Bits in the Real World
Lesson 1-5
AP Computer Science Principles

2. Objectives Students will be able to:
Differentiate between three common methods for transmitting bits across the Internet.
Identify how household items use these technologies to send, receive, or store information.

3. Journal
What materials are used to send data over the internet?

4. Video Guide Download the “U1L05 Worksheet - Video Guide”
Complete it as you watch the video. Turn it in before you leave today.

5. The Internet: Wires, Cables & WiFi

6. Activity Down load the Activity Guide and Rubric from the Web Site
You will be working in groups of 3
Each group must pick a different device
You only have today to complete this task

7. Activity
You will use your new understandings of how bits travel across the Internet to learn more about bit sending devices you use every day.
You will choose a familiar digital device that transmits information and research which bit sending technology it uses.
Once you’ve completed your research you’ll be asked to create a poster to present your findings to your classmates.

8. Activity – You need to find:
The bit-sending technology used by your device (copper wire, fiber-optic, radio waves). Why do you think this technology is used to perform its function as opposed to the others that do the same?
The average bit rate of the device
The approximate year this device was first used and whether it’s still in use today.
Something interesting you learned while researching. Some ideas include:
Average price per bit
Potential security issues with device
How the technology developed over time

9. Review Each Other’s Work
Grade your own project on the rubric sheet. Give reasons for your grades.
Review everyone’s work and complete the bottom part of the rubric.

10. Code Studio
Complete Stage 5