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Students explore possible reasons that northwestern crows drop a type of mollusk called a whelk from a height of 5 meters. In this investigation students explore the possible reasons behind the observation that northwestern crows consistently drop a type of mollusk called a whelk from a height of 5 meters. This lesson plan is based on the <A href="http://illuminations.nctm.org/imath/912/Whelk/index.html">Whelks i-Math Investigation</A>.
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