Mantra for Kids
ॐ पूर्णमदः पूर्णमिदं पूर्णात्पूर्णमुदच्यते
Om Purnamadah Purnamidam Purnat Purnamudachyate
Simple meaning
That is whole, this is whole; from wholeness, wholeness emerges. Taking wholeness from wholeness, wholeness alone remains.
In everyday life
Teaches children self-worth, reminding them that they are already complete and whole just as they are.
Reference: Isha Upanishad / Brihadaranyaka Upanishad