About This Book
A curious boy named Rollo and his companions investigate the properties and behavior of air through outdoor adventures, hands-on experiments, and plainspoken explanations. Episodes place simple scientific tasks inside scenes such as travel on packed snow, attempts at flying and ballooning, valve-making, and tests of pressure, wind, still air, combustion, and gravitation. Practical demonstrations are paired with questions and assigned tasks to facilitate use by parents or teachers. The work mixes narrative incidents with step-by-step experimental description to promote careful observation, logical thinking, and the formation of useful intellectual habits in young readers.
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