This is the 2895th most frequent Arabic word.
موضحا
"Explaining" or "clarifying."
In this sentence, 'موضحًا' functions as a present participle describing what the teacher did.
شرح الأستاذ الفكرة موضحًا النقاط الرئيسية.
The teacher explained the concept, clarifying the main points.
Here, 'موضحًا' acts as a gerund, describing the clarification process provided by the researcher.
كتب الباحث تقريرًا مفصلاً موضحًا فيه النتائج بالتفصيل.
The researcher wrote a detailed report, clarifying the results in detail.
In this usage, 'موضحًا' serves to describe the action taken by the director in explaining his rationale.