12:45. End of class. 8 minutes left. 'Before you go, a quick review'.
Online flashcards in class
You open flashcards on the board. The class answers together. The student who knows explains to the one who doesn't. 8 minutes — and the material sticks in their heads, not in a notebook.


You open flashcards. The class answers.
You pick a flashcard set — from the last 3 lessons. You open it on the board. You ask the class. Someone answers out loud, someone checks themselves mentally, someone just now gets what it's about.
Flashcards on the board isn't 'silence, do it yourself'. It's interaction — teacher asks, class answers, there's energy. That's the part of the lesson where students actually listen, because there's a stake.

Student explains to student
Flashcard: 'What is photosynthesis?'. Student A answers, but not quite. Student B corrects and explains in their own words. Teacher fills in. Three perspectives on one question.
That's flipped classroom in 3 minutes. The student who knows reinforces by explaining. The student who doesn't understand better because a peer explains in different language than the textbook. The teacher sees who gets it and who doesn't.

Same set at home
After class you send students a link to the same flashcard set. They open it on their phone or computer. They review on the bus, before bed, before the test.
No need to create separate homework material. The same flashcard set that was on the board works on the phone too. The student reviews exactly what was in class — not something different.
“Flashcards in a notebook get lost. Flashcards on the board stick in heads.”
Do your first flashcard review
Create an account, open a board, and start a class review — even if you only have 5 minutes.