Resources by Dan Mayer
Displaying 41 - 50 of 78
Obscure geometry
A video is shown of a square with its diagonals marked. The resulting regions are, of course, 25% of the whole square. A motion graphic shows one of the diagonals sliding down a side to rest at the mid-point. What percentage of the whole is each region?
This is an adaptation of a print-based task designed by...
Partial products
There are three pictures given of multipacks of food. In each case, some items have been removed from the multipack, and the shopper wishes to purchase the quantities left. The prices are given for a full multipack for each product. What is the total grocery bill?
This sub-collection of materials from the dy/dan collection contains three resources that bring mathematical storytelling to the classroom in the context of ‘percentages and fractions’. Resources comprise:
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Act One: a video or photograph to provide a ‘hook’ to the problem
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Act Two:...