Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
형성적 평가가 학생들의 학습에 긍정적인 영향을 미친다.hyeongseongjeok pyeonggaga haksaengdeul-ui hakseub-e geungjeongjeog-in yeonghyang-eul michinda.Formative assessment has a positive impact on students' learning.