الدراسة الاستقصائية ، اختبار ، تقييم ، نمط ، مشبك ورق ، ملحوظة ، سلس ، نقل ، معلومات ، البيانات ، التوضيح التربوي العلمي
الصور ذات الصلة الخالية من حقوق الملكية
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