Classroom Resource

Files & File Systems: Crash Course Computer Science #20

Subject Area

Digital Literacy and Computer Science

Grade(s)

9, 10, 11, 12

Overview

We’re going to look at how our computers read and interpret computer files. We’ll talk about how some popular file formats like txt, wave, and bitmap are encoded and decoded giving us pretty pictures and lifelike recordings from just strings of 1’s and 0’s, and we’ll discuss how our computers are able to keep all this data organized and readily accessible to users. You’ll notice in this episode that we’re starting to talk more about computer users, not programmers, foreshadowing where the series will be going in a few episodes.

Digital Literacy and Computer Science (2018) Grade(s): 09-12

DLCS18.HS.7

Compare and contrast fundamental data structures and their uses.

Unpacked Content

UP:DLCS18.HS.7

Vocabulary

  • data structures
  • arrays
  • stacks
  • queues
  • list
  • strings

Knowledge

Students know:
  • when to include varying types of data structures into a program to achieve a desired result.

Skills

Students are able to:
  • compare and contrast fundamental data structures and their uses.
  • properly use varying types of data structures in a program to achieve a desired result.

Understanding

Students understand that:
  • data structures organize data for ease of recall.
  • data structures differ by organization structure and purpose.
Digital Literacy and Computer Science (2018) Grade(s): 09-12

DLCS18.HS.29

Summarize the role of compression and encryption in modifying the structure of digital artifacts and the varieties of information carried in the metadata of these artifacts.

Unpacked Content

UP:DLCS18.HS.29

Vocabulary

  • compression
  • encryption
  • metadata

Knowledge

Students know:
  • that when a file is altered in any way, changes may be seen in the file metadata.
  • compression and encryption are two methods used when sharing data.

Skills

Students are able to:
  • explain the roles of compression and encryption.
  • summarize the effects of compression and encryption on the metadata of a digital artifact.

Understanding

Students understand that:
  • any process applied to data has the potential to alter the structure of the data.
  • it is important to be aware of potential changes to data structure when electing to use a process.
Digital Literacy and Computer Science (2018) Grade(s): 09-12

DLCS18.HS.30

Evaluate the tradeoffs involved in choosing methods for the organization of data elements and the location of data storage, including the advantages and disadvantages of networked computing.

Unpacked Content

UP:DLCS18.HS.30

Vocabulary

  • client server
  • peer-to-peer
  • cloud computing

Knowledge

Students know:
  • that many options exist for the storage and organization of data.
  • that selecting one storage option over another will have both advantages and disadvantages.
  • that it is important to understand the tradeoffs involved with selecting one method over another.

Skills

Students are able to:
  • research methods of data organization and storage.
  • examine advantages and disadvantages of networked computing.
  • evaluate the tradeoffs involved in choosing methods for the organization of data elements and the location of data storage, including the advantages and disadvantages of networked computing.

Understanding

Students understand that:
  • how and where data is stored can affect how the data is accessed and/or processed.
  • how and where data is stored can affect the safety of that data.
  • it is important to carefully weigh how and where data is stored.
Link to Resource
https://aptv.pbslearningmedia.org/resource/files-file-systems-crash-course-cs/f…

CR Resource Type

Audio/Video

Resource Provider

PBS
Accessibility

Accessibility

Video resources: includes closed captioning or subtitles
License

License Type

Custom

Custom License Type (URL)

https://www.pbslearningmedia.org/help/terms-of-use/

Approved Date

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