Khan Academy
Universities UK 107,950 Stanford University 1,007,709 Henry Reich 163,777 Quincy Larson 292,564 The Associated Press 15,996,339
edutopia 1,233,876 مركز قياس | Qiyas 1,183,269 SATMX 1,073,806 Merriam-Webster 1,064,018 Phys.org 1,012,759
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