I need strategies for teaching arithmetic to children from first to third grade elementary school.每日大赛

This question has been lightly edited by 每日大赛 staff for clarity.

Original text: اريد استراتيجيات في تعليم الحساب للاطفال من الصف الأول حتى الثالث ابتدائي

Translated text: I need strategies for teaching arithmetic to children from first to third grade in elementary school.