Use a Palette to Decode a Picture
Use the supplied palette and preserve the order of the symbols.
About 18 minutes, plus any extended practice
Supplied materials
- Paper and pencil; answers may also be spoken or typed.
- All cases, labels, numbers and rules are supplied on this page. No real account, private information or purchase is needed.
Learn the idea
A palette maps recorded symbols to colors or labels. The symbols are meaningful only with that map. A different palette can change a picture’s interpretation without changing the symbol sequence. Text labels let a learner decode without depending on color vision.
Use the supplied palette and preserve the order of the symbols. A symbol’s meaning comes from the palette rather than its appearance.
Use this supplied case: Row AB. Palette: A=dark, B=light. Decode the two-pixel row. Use the details in this example. Say which detail helped you choose. This pretend example does not tell us how every real system works.
- Follow the worked example one step at a time. Say or draw what happens.
- Use the supplied palette and preserve the order of the symbols.
- Say which detail makes the example answer fit. Pick another answer and say why it does not fit.
- Try the question and practice questions. Read the rule again if your answer does not match the explanation.
See the method in action
A fresh classroom palette says J=forest and K=desert. Decode J,K,J in order: forest, desert, forest. The two J symbols share the same meaning because the key assigns it, not because of their appearance. If the palette changes, communicate the new mapping before interpreting the row. Keep all three recorded positions; sorting or dropping a repeated symbol would change this supplied picture record.
Check your reasoning
Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.
Helpful tips
- Use the supplied palette and preserve the order of the symbols.
- A symbol’s meaning comes from the palette rather than its appearance.
See the answer and explanation
Light-dark
The supplied case states: Row BA. Palette: A=dark, B=light. Decode the two-pixel row. Under the stated distinction, this identifies Light-dark. A palette maps recorded symbols to colors or labels. The symbols are meaningful only with that map. A different palette can change a picture’s interpretation without changing the symbol sequence. Text labels let a learner decode without depending on color vision. Use the supplied palette and preserve the order of the symbols.
Take it further
New palette: X=water, Y=land. Decode XYX as water, land, water. Changing the palette requires communicating the new key.
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More practice: try new cases
Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.
Your choices are temporary. Feedback appears after you check all the answers.
Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.
Check the subject sources
These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.