Developing mathematics curriculum in the light of Egypt's vision of sustainable development (2030) and its effect on developing some of 21 st century skills of preparatory stage pupils اىلمزــ٘ه ئػـلاك ػجلاىجو ػجلاىؾَٞل ٍؾَل ػجلاىْبطو ٗ اىَْبٕظ أٍزبم رؼيٌٞ اىََبػل اىوٝبػٞبد (اىَشبهك) اىزوثٞخ ميٞخ-اىَ ْ٘فٞخ عبٍؼخ
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