I have often found myself in discussions with coaches and teachers regarding the differences between differentiated, individualized, and personalized learning. Personalized learning is something I am very passionate about, and I almost cringe when I see it under the same definitions as differentiation or individualized learning.
There is a great chart that was created by Barbara Bray and Kathleen McClaskey that really explains it best, and it is my go-to reference for describing the differences when this topic comes up in teaching, planning, and curriculum conversations.
The biggest difference to note is that both differentiated and individualized are teacher-driven -- the teacher is prescribing the learning and providing any scaffolding or accommodations needed by the student. With personalized learning, it is the student that is actively setting goals and driving his or her learning.
Barbara Bray and Kathleen McClaskey do an incredible job of going deeper into personalized learning on their website, Personalize Learning. If you want to connect and learn more, I also highly suggest that you follow Barbara on Twitter at @bbray27 and Kathleen at @khmmc.