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  1. ← All courses
  2. Computer Science
  3. Unit 4: Algorithms and Programming with Scratch

Topic 4 of 4

Scratch So Far: Review

Review what we have practiced, then see what comes next

Lessons and study tools
PracticeKey wordsMy work
  1. Unit 1: Computer Hardware
    1. What Makes a Computer?
    2. Four Jobs of a Computer
    3. Data and Information
    4. CPU, RAM, and Storage
    5. Devices and Ports
    6. Choosing Hardware
    7. Hardware Review
  2. Unit 2: Computer and Internet Basics
    1. The Five Roles
    2. The Request Trip
    3. Local, Remote, and the Cloud
    4. Unit Review
  3. Unit 4: Algorithms and Programming with Scratch
    1. Sprites, Stage, and Scripts
    2. Sequence and Tracing
    3. Plan, Build, Explain
    4. Current lessonScratch So Far: Review
  4. Unit 5: Digital Representation and File Management
    1. Only Two Choices: Bits and Switches
    2. Counting in Binary
    3. Same Bits, Different Meaning
    4. Pictures, Sound and Size
    5. Adding in Binary
    6. Subtracting in Binary
    7. Binary Review
  1. 1Learn it
  2. 2Practice it
  3. 3Finish

Step 1 of 3: Learn it

Learn it · 1 of 2What's coming next in Unit 4Next: Watch and exploreChoose an activity

One idea at a time. Try the example, then keep going.

Heads up · 1 of 2

Heads up

What's coming next in Unit 4

Do this: Read the outlook. Keep it separate from the skills reviewed above.

We have taken our first steps with Scratch. Unit 4 is not finished. Next, the class studies software, sources, and events. Later in Unit 4 come repetition and testing. Those are upcoming lessons, not skills this review expects you to have learned already.

From other sites

Watch and explore

Do this: Pick one to see the same ideas another way.

  • What is Scratch?

    Scratch Team, about 2 minutes

    Watch for:

    • What the video says you can make
    • Who uses Scratch around the world
    • What you share when you finish
    Open on YouTube↗ (opens in a new tab)

Video not loading? It might be blocked on this wifi. Try it at home.

Step 2 of 3: Practice it

What is left (3 of 3)

Ready when you are.

Activity 1 of 3 · 0 of 3 activities done

Checklist

Night-Before Checklist

Do this: Check only what you can explain without looking. Use Go study this for a skill you need to practice.

0 of 8 checked

  • Study
  • Study
  • Study
  • Study
  • Study
  • Study
  • Study
  • Study

Tip: This reviews our first steps with Scratch, not all of Unit 4. An unchecked box tells you where to start.

Self-test

Scratch so far self-test

Do this: Choose one answer for each question. Read every explanation, then revisit any skill you missed.

10 questions. One at a time.

Practice, not a grade. No timer. Your best score stays in this browser.

Tip: For a movement question, write one line per block. Keep the old x until a block changes it.

Match

Match the key words

Do this: Choose a word, then choose its meaning.

Word match round

Connect the ideas

0 / 4 connected

Choose a term, then its meaning. Or drag its grip. Use Tab and Enter or Space; Escape clears.

Terms

Meanings

Step 3 of 3: Finish

Ready to move on?

Practice it: You did 0 of 3 activities.

You decide when you have finished. This is your study progress, not a grade.

Not marked finished yet.

Next lesson: Only Two Choices: Bits and SwitchesUnit 4: Algorithms and Programming with Scratch
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Published with approval from Mr. Farzin Khan Shifat. Last updated November 4, 2026.