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English World

Each one is a five-minute mystery. Start with any of them.

A young reporter investigating a noisy suit of armour after dark

Level 08 · Warm-upPunctuation · Introductory commasThe Midnight Museum HeadlineA dinosaur sneezes after closing time, but the newspaper headline is missing a comma.Written by AI · checked twiceStart lesson

A reporter examining one box filled with many moon rocks

Level 09 · CoreGrammar · Subject–verb agreementThe Moon-Rock HeadlineA box of moon rocks is glowing, and Lumi matches the verb to the wrong word.Written by AI · checked twiceStart lesson

Two space explorers untangling which telescope points the wrong way

Level 10 · CoreGrammar · Clear pronoun referenceThe Two-Telescope TangleTwo friends, two telescopes, and one little word 'his' that could mean either of them.Written by AI · checked twiceStart lesson

Bees following a worker bee's waggle dance toward flowers

Level 11 · CoreReading Clues · Finding the main ideaThe Secret Bee DanceA report about a bee dance, and Lumi picks one small detail as the main idea.Written by AI · checked twiceStart lesson

A child following muddy pawprints from an empty treat jar to a dog

Level 12 · CoreReading Clues · Making an inferenceThe Missing Moon TreatsMuddy pawprints, an empty jar, and a dog covered in crumbs. Lumi ignores all the clues.Written by AI · checked twiceStart lesson

An announcer pointing to two explorers' backpacks beside a launch gate

Level 13 · Warm-upHomophones · Homophones in contextThe Backpack BroadcastThe announcement sounds fine out loud, but the spelling on screen is wrong.Written by AI · checked twiceStart lesson

A paper rocket launching before its craft instructions are completed

Level 14 · Warm-upReading Clues · Sequencing instructionsThe Backwards Rocket ManualLumi's instructions launch the rocket before it has even been folded.Written by AI · checked twiceStart lesson