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Ch-ch-ch-changes! Mathalicious is now Citizen Math . Please visit www.CitizenMath.com for the real-world math lessons you know and love. Alternatively, you can continue to access Mathalicious.com until the end of the school year, at which point Mathalicious will ride off into the sunset. For more details about the transition to Citizen Math, please click here.

Watch this news clips about a 2012 viral outbreak of Ebola. What do you know about viruses and how health workers protect themselves while caring for the sick.