Age: 10-11 years

Duration: 70 min

Objectives

• Define common academic prefixes (pre-, sub-, trans-, inter-, re-) and apply them to unfamiliar words.
• Break multisyllable words into prefix + root and infer meaning in context.
• Build a prefix reference chart for use in argumentative writing.

Vocab

• prefix: "A prefix is a word part added to the beginning that changes meaning."
• preview / predict: "Preview means view before; predict means say before."
• submarine / subway: "Sub- means under — submarine goes under water."
• transport / transfer: "Trans- means across — transport moves goods across distances."
• interact / international: "Inter- means between — interact means act between people."

Warm-up (5min)

Prefix snap — teacher says pre-, students say preview or predict in a phrase. Repeat for sub-, trans-, inter-, re- — choral response builds speed.

Main Activity (55min): "Word Roots"

"Prefix Detective Workshop" — Round 1: Anchor chart — 8 prefixes with meaning, example, student sentence column. Round 2: Word surgery — 20 cards (preview, submarine, transport, interact, rewrite, submerge, international, transfer) — cut prefix, name root stub, infer meaning. Round 3: Context cloze — 10 sentences from academic texts; choose correct prefixed word. Round 4: Build-your-word — given root "view" or "port," create 3 prefixed words and define. Round 5: Chart completion — each student adds 5 words to personal prefix chart with icons. Round 6: Writing link — use 3 prefix words in sentences about supply chain or school topic. Peer check: circle the prefix in partner sentences. First morphology page for G5 writing folder.

Wrap-up (5min)

Sticky note: one new prefix word + definition — post on Prefix Wall.

Teacher Tips

• First of three word-root units (03, 07, 15) — charts accumulate across G5 for exam vocab gains.
• Korean L1: Latin/Greek roots are high-value — connect to Konglish where safe (international, preview).
• Do not overload — 5–6 prefixes per lesson sticks better than 15 rushed.