Spaced repetition systems Fluent Forever https://www.youtube.com/watch?v=SBPgr2OzW5w#t=5m0s https://www.youtube.com/watch?v=iBMfg4WkKL8#t=7mDiscovery learninghttps://www.youtube.com/watch?v=De6ChXRiVmwhttps://www.youtube.com/watch?v=C4IZT1v

続きを読む