AU - العتيبي، محمد رحيم براك AB - The study aimed at investigating the effectiveness of learning cycle strategy (7E's) on acquisition and retention of the chemical concepts among the first-secondary grade students' in the Kingdom of Saudi Arabia. To answer the study questions, the quasi-experimental approach was used with a sample of (119) students who were selected and distributed randomly into two groups: an experimental group which consisted of (59) students and a control group of (57) students. The study recommended that teachers should be encouraged to use the learning cycle strategy (7E's) in science teaching because it has an effect on acquiring the chemical concepts and saving it. (Published abstract) http://search.shamaa.org/abstract_en.gif OP - ص ص. 1-21 إنما 167-187 T1 - فاعلية استراتيجية دورة التعلم السباعية (7E's) في اكتساب المفاهيم الكيميائية والإحتفاظ بها لدى طلبة الصف الأول الثانوي في المملكة العربية السعودية [مقال] UL - https://www.mecsj.com/ar/uplode/images/photo/%d9%83%d9%8a%d9%85%d9%8a%d8%a7%d8%a6%d9%8a%d8%a9.pdf النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif