Teaching kids vocabulary word-by-word doesn't scale. Lumi teaches the building blocks — prefixes, suffixes, Greek and Latin roots — so kids can decode thousands of new words on their own.
Start Free →un-, re-, pre-, mis-, dis-, multi-, inter-, over-, sub-, super- and more — meaning, usage, and examples in context
-ful, -less, -tion, -ness, -able, -ment, -er, -ist, -ology, -ify — how suffixes change word meaning and part of speech
bio (life), geo (earth), photo (light), graph (write), phon (sound), astro (star), micro (small), tele (far)
port (carry), rupt (break), dict (say), scrib/script (write), aud (hear), vis (see), struct (build), duct (lead)
Definition clues, synonym clues, antonym clues, example clues — how to figure out an unfamiliar word from its surroundings
Denotation vs. connotation, positive/neutral/negative connotations, how word choice affects tone
A child who knows that port means "carry" can decode transport, import, export, portable, portfolio — five new words from one root. That's the power of root instruction, and it's how Lumi approaches vocabulary from 3rd grade onward.
Prefixes, suffixes, roots, context clues — all covered K–8. Free 72-hour trial — no card needed.
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