Bingo is retrieval practice that the whole class does at once, with nobody able to hide and nobody able to lose badly. Here are six variants, the one rule that makes each of them work, and the five-step way to call it from your phone.
Card: 16 or 25 words from this unit, in random order on each card.
Call: read the definition, a synonym, a sentence with a blank, or (for languages) the word in English. Pupils find the word.
Twist: line wins get a definition read back; full house must give you one new sentence.
Card: answers only (e.g. products 1 to 144, or bonds to 20).
Call: the question: "7 times 8", "what plus 6 makes 20", "half of 0.5".
Twist: with a number card (the app deals them), call "the square root of 49" instead of "7". Same board, harder maths.
Card: 9 sight words per card, big print, from your current list.
Call: say the word, hold it up, or use it in a sentence and pause on it.
Twist: "first to a full row reads the row aloud"; keep it to three rows and play twice.
Card: spooky nouns and adjectives (cauldron, cobweb, eerie, howl) or Halloween-themed maths answers.
Call: riddle style: "I have eight legs and I spin", "the sound a wolf makes at the moon".
Prize: a sticker, a pencil, or choosing the story for the last ten minutes. Never sweets from the caller.
Card: festive vocabulary, or "the twelve days" numbers (1 to 12) for the youngest.
Call: a carol line with the word missing, a picture on the board, or a country and its December tradition (Italy: tombola; Mexico: posadas; Japan: bōnenkai bingo).
Twist: full house is a class carol, not a prize.
Card: 25 key terms, dates, formulas or names from the whole unit.
Call: exam-style questions, each with one card answer. Read the question twice; do not show it.
Twist: pupils write the question number next to the square they mark. Their card is now a revision sheet they made themselves.
Free printable cards: housie-caller.vercel.app/bingo-card-generator — number cards (75-ball or 90-ball) and word cards from your own list, 30 unique cards on A4, no sign-up. Numbers-only games need no printing at all: pupils with a tablet or phone scan the room QR, install the free app and get a card on screen; everyone else plays on paper.
Straight talk. The app's screens and caller voices are in English (US, UK, Australian and Indian English). Pupils who join with a device never see an ad and never pay. Your first hosted game is free with everything switched on, including the TV board; after that you can watch a short optional video or buy premium games. One-time purchases only, never a subscription. It is a number caller and host tool for games you run in person; there is no gambling, no real money and no prizes inside the app.
Links: app housie-caller.vercel.app/get · cards /bingo-card-generator · rules for 75 and 90 ball /rules · housie-caller.vercel.app