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2015 Economic Impact of *Applied Discrete Structures*

We had a event on campus where open source textbooks were one of the featured subjects, so I took the opportunity to put together the numbers for the economic impact of

*Applied Discrete Structures* (

*ADS*) for the calendar year 2015.

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UML Impact

It's fairly easy to identify the impact here at UML. I counted 405 students who took the first semester of our discrete math sequence (new course numbers MATH.3210/3220 Discrete Structures I/II). I continue to assume that the average cost of our previous text with a mix of new/used purchases would be $140. If 90% use the pdf and save the whole amount and the rest buy the hard copy of

*ADS. * That translates to a savings of about $55,000 for UML students in 2015.

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Outside Impact

The impact on students outside of UML is tougher to estimate. I know of 14 adoptions in 2015, but have no idea how many more there were. Working from just what I know, and assuming 25 students per adoptions with the same assumptions about the alternate book and hard copy usage, I come up with around $47,000.

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Conclusion

Combining these two amounts, I'm confident we've saved students over $100,000 in 2015. If you used

*ADS* and are not on the

adoption list, please

let me know so that I can update my estimate.