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The Balance Scales Question block creates interactive activities where learners use balance scales to compare values, read measurements, or find target amounts. Learners interact with the scales by adjusting values to answer the question. Great for building comparison, equality, and early algebra skills.
Balance Scales Questions support multiple answer modes including balancing the scales, comparing values, reading a value, and reaching a target.

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When to use Balance Scales Questions

Balance Scales Questions work well for:
  • Comparing two values (greater than, less than, equal to)
  • Finding the value that balances both sides
  • Reading a measurement from one side of the scales
  • Reaching a specific target value
  • Building early algebra and equation-solving skills

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Settings

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Value settings

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input
default:"4"
The starting value on the left side of the scales.
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input
default:"6"
The starting value on the right side of the scales.
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input
default:"0"
The lowest value a learner can set on the scales.
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input
default:"20"
The highest value a learner can set on the scales.
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input
default:"1"
The increment by which learners can adjust values.

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Display settings

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switch
default:"true"
When enabled, displays the numeric values on each side of the scales.
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select
default:"Medium"
The display size of the scales:
  • Small: Compact display
  • Medium: Standard display
  • Large: Larger display for projection or emphasis
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slider
default:"1"
Controls how dramatically the scales tilt based on the difference between values (0.2 to 2).

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Answer and marking

Set the correct answer using one of four modes:
  • Balance: The learner must make both sides equal
  • Compare: The learner must identify which side is greater or if they are equal (less than, equal, greater than)
  • Read: The learner must read and enter the value shown on one side
  • Target: The learner must adjust one side to reach a specific value
You can also set a tolerance value for answers that allow a range of acceptable responses.

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Response settings

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select
default:"Correct"
Determines when the question is considered complete:
  • Correct: The learner must answer correctly to proceed.
  • Answered: Any response is accepted; correctness isn’t required.
  • Optional: The learner can skip the question entirely.
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slider
default:"0"
The number of attempts the learner can make before the question is locked (0–3). Set to 0 for unlimited attempts.
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slider
default:"5"
The experience points awarded for answering the question correctly (0–10).

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Tips for teachers and parents

Best practices:
  • Use Balance mode for early algebra readiness activities
  • Start with Show values enabled, then turn it off for more challenging estimation activities
  • Use small step values (like 1) for younger learners and larger steps for older learners
  • Compare mode works well for reinforcing inequality symbols
  • Pair with Balance Scales display blocks to model the concept before assessing