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Tips for Teachers: Alternative Objects

Teachers can use their own images. Teachers need to have a good idea of how big the whale is so that s/he can calculate the screen ratio for students. Recommend to look up the average size of adults of that species. This activity can also measure lengths on a computer screen or smartphone screen.

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Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.