A quiz game where knowing beats guessing.
Gravity is Bravito’s projector quiz game. Pupils pick an answer and then say how sure they are: being right and sure scores most, and being sure and wrong costs points, so an honest “not sure” beats a fast bluff.
The demo needs no account and saves nothing. Free for teachers, no card.
The trouble with points for speed
When the fastest right answer scores most, pupils learn to tap first and think later. The quick guessers top the board, and the pupil who stops to work it out comes last. That is the opposite of what we want them to practise.
How confidence-based marking scores
After choosing an answer, each pupil says whether it is a guess, they think so, or they are sure. Right answers score 100, 200 or 300. Wrong answers score nothing for a guess, lose 200 for “think so” and lose 600 for “sure”. The scheme follows the confidence-based marking developed by A. R. Gardner-Medwin at UCL.
Pupils quickly learn to judge what they really know, and you learn something too: a pupil who was sure and wrong has a misconception, not a gap, and Bravito flags it.
Think time before the answers open
Everyone gets a few seconds to read the question before the answers unlock, so slower readers are not out of the game before it starts.
Still loud on the board
- Questions can be multiple choice, true or false, type the answer, or put in order.
- Everyone for themselves, teams (a team’s score is its members’ average, so size doesn’t matter) or a team race.
- The board shows the top five; each pupil sees only their own position. Names can be hidden on the board.
- Want a quick-fire round? Switch a game to speed scoring.
- At the end, replay the class’s hardest questions with one button.
Every answer counts
Choose a class when you launch and every answer lands on the class record, by pupil and by topic. Answers where a pupil was sure but wrong are flagged, and the reteach list turns them into your next retrieval quiz.
The same round, scored both ways
Think time first. Points for being right and knowing it. Sure and wrong costs points, so bluffing doesn’t pay.
- 1Priyala pomme ✓ · sure+300
- 2Samla pomme ✓ · think so+200
- 3Jayla pomme ✓ · guess+100
- 4Tomle pomme ✗ · sure−600
For a quick-fire round. The fastest right answer scores most, and a wrong answer scores nothing.
- 1Jayla pomme ✓ · 1.1s+973
- 2Priyala pomme ✓ · 6.2s+845
- 3Samla pomme ✓ · 9.8s+755
- 4Tomle pomme ✗ · 1.4s0
The same French round scored both ways, with made-up names. The question was “the apple”.
Questions teachers ask
- What is confidence-based marking?
- A way of scoring where the learner says how sure they are as well as giving an answer. Being right and sure earns most; being sure and wrong costs most. It rewards knowing what you know, and discourages guessing.
- Is Gravity free?
- Yes. Gravity is part of the Free plan, with every other mode, for up to three classes and 35 pupils in a session.
- Can I still play for speed?
- Yes. New games use confidence scoring, and you can switch any game to speed scoring for a quick-fire round. You can also add a streak bonus.
- Do pupils need accounts to play?
- No. Pupils join on their own device with the class code and their name.
- What question types does it support?
- Multiple choice, true or false, type the answer, and put in order. Each question can be standard, double points or practice.
- Run under UK GDPR and the Data Protection Act 2018
- Data and app servers in Europe
- No ads, no tracking cookies
- Data-processing agreement for schools
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