Overview
Rogers shows models of a bicycle and a tricycle. Along the way, he introduces the prefixes "bi" and "tri" to compare what each one means. In the Neighborhood of Make-Believe, Bob Dog fears moving wheels.
Rogers shows models of a bicycle and a tricycle. Along the way, he introduces the prefixes "bi" and "tri" to compare what each one means. In the Neighborhood of Make-Believe, Bob Dog fears moving wheels.
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