Hello John, 

There are a few hours left in the MIT 24-Hour Challenge and we still need 350 people to donate by midnight to make our challenge goal. 

Can we count on your support?  

Your contribution will help OCW continue to grow with new free resources from MIT. Gifts of any size can help make an impact and count towards our goal. 

Thank you for considering a gift to OCW before 11:59 pm ET as part of the MIT 24-Hour Challenge!

MIT OpenCourseWare 

P.S. If your gift and this message have crossed paths, please accept our thanks for your support!