character: Design Dave
topic: Building Bridges with Different Materials
grade: 4
subject: Reading
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character: Engineer Emma
topic: Innovative Designs for Strong Bridges
grade: 4
subject: Reading
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character: Builder Bob
topic: Materials Used in Bridge Construction
grade: 4
subject: Reading
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character: Creative Carla
topic: Exploring Bridge Designs Around the World
grade: 4
subject: Reading
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