khanacademy
Hey 🇺🇸 teachers! 👋 Finish our free, 60min mini-PD by July 31 to enter our next prize draw to win a trip to San Francisco! ✈️🎁 https://t.co/msvkfabKCh Tweet your certificate with the hashtag #khanteachertraining + tag another teacher for an extra entry!
— Khan Academy (@khanacademy) July 28, 2018
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