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Gr 1—2—Extremely close-up photos that do not permit good perspective combine with inconsistent vocabulary to produce a series that assumes that readers have never encountered any of these machines...
PreS-Gr 1—This shark is not afraid of shots (delivered by a swordfish), scary movies (a color photo shows a young boy fishing in a pond), or even dinosaurs—if they were still around...
Gr 6—8—Like the "How They Made Things Work!" series above, this one tackles innovations from ancient cultures, but here they are grouped together by type rather than by area or period...