'Sun clock' presentation slideshows

PSC-1121 Lecture Set #1

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grandfather clock

grandfather clock. alarm clock. hand. wrist watch. Switzerland. digital clock. pocket clock. Sun clock ??. In ancient times, people used the position of the sun to tell time. New words. position: ?? mechanical clock: ??? alarm clock: ?? hand: ?? pocket clock : ??.

457 views • 22 slides

370 views • 9 slides