character: Estimation Expert
topic: Comparing Lengths through Estimation
grade: 3
subject: Mathematics
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character: Length Explorer
topic: Understanding Measurement with Estimation
grade: 3
subject: Mathematics
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character: Math Wizard
topic: Using Estimation to Solve Length Problems
grade: 3
subject: Mathematics
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character: Measurement Master
topic: Estimation Techniques for Comparing Sizes
grade: 3
subject: Mathematics
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