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Robert Kaplinsky


Directions: Write three equations whose solution is x = 3. Source: Dan Meyer

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Directions: Draw three rectangles with a perimeter of 20 units. Source: Dan Meyer

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Order of Operations

Directions: Make the largest (or smallest) expression by using the digits 0-9, no more than one time each, in the boxes below.  Note: for 5th grade, remove the exponent to make it grade level appropriate. Source: Robert Kaplinsky with answer from Michael Fenton and his students.

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Equivalent Ratios

Directions: Using the digits 1 to 9, fill in the boxes to make as many ratios as you can that are equivalent to 2:3. Source: Robert Kaplinsky

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