Hamza is technically not a letter; it is a spelling rule given a shape. Children learn it as a helper that prevents two vowel sounds from running into each other. The most common place a child sees hamza is the verb-ending family: گئی, آئی, لائی, all need hamza on top of yay because the i sound has to stay separate from the a sound before it. Hamza also rides on waw in words like کوئی pronounced as koi, and stands alone in some Arabic-borrowed compounds. The shape itself is small and quick; the harder lesson is when to write it. Treat that as a spelling rule taught alongside the words it appears in, not as a letter to drill in isolation.

Hamza is the alphabet's smallest mark and one of its most important. It is the pen pause that keeps two vowels from collapsing into each other. Tell your child the language has a tool just for this, and that tool is theirs to use.