character: Engineer Ella
topic: Testing Materials for Engineering Projects
grade: 4
subject: Reading
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character: Design Dave
topic: Building Bridges with Different Materials
grade: 4
subject: Reading
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character: Inventor Izzy
topic: Innovative Materials for Inventions
grade: 4
subject: Reading
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character: Constructor Carl
topic: Evaluating Structures for Safety
grade: 4
subject: Reading
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