Add your students below (or import from Google Classroom), then use the tabs above for random groups, name picking, timers, and AI-generated thinking tasks.
Import from Google Classroom
Optional
Sign in with Google to load your class roster automatically. You can import from multiple classes.
Signed in as
💡 Each load adds to the student list. Use Clear All to start fresh.
Students0 / 100
Number of Groups
~0 students per group
🔒 Teacher ModeReveal separation & together rules for editing
OFF
Separation Rules0 rules🔒 Teacher only
These two students cannot be in the same group.
≠
Together Rules0 rules🔒 Teacher only
These two students must be placed in the same group.
=
🔒 Some grouping rules are active but hidden. Groups will still be assigned fairly.
Results
Students are added from the Groups tab.
🎡 Spinning Wheel
Spin the wheel and land on a random student.
Remove picked names — auto-resets when everyone's had a turn
⚠️ No students added yet — go to the Groups tab and add students first.
◀
⏱️ Stopwatch
00:00.0
⏳ Countdown
min
:
sec
05:00
Thinking Question Generator
Generates a fully structured BTC thinking task — low floor / high ceiling, VNPS-ready, with hints, solution, and teacher notes.
Hints for stuck groups
Teacher Solution
Extension
🏫 BTC Notes
Recent Questions
📊 BTC Group Work Rubric
⏱️ Timer:
05:00
Category
⭐ Excellent
👍 Getting There
🚫 Not Yet
🤝 Collaboration
Everyone participates
Share the marker
Respect ideas
Most participate
Some sharing
One person works
Ignoring or arguing
🗣️ Communication
Explain steps clearly
Writing easy to read
Use math vocabulary
Some explanation
Some unclear writing
Not explaining
Guessing
Hard to read
🎓 Teach Each Other
Everyone can explain
Help each other understand
Some can explain
Only one understands
Rushing
💪 Perseverance
Do not give up
Try different strategies
Keep thinking
Try, but stop when stuck
Give up quickly
🔢 Mathematical Thinking
Justify answers
Look for patterns
Check if it makes sense
Some reasoning shown
Limited explanation
Just answers
No explanation
Guessing
◀
📊 BTC Group Work Rubric
05:00
Category
⭐ Excellent
👍 Getting There
🚫 Not Yet
🤝 Collaboration
Everyone participates
Share the marker
Respect ideas
Most participate
Some sharing
One person works
Ignoring or arguing
🗣️ Communication
Explain steps clearly
Writing easy to read
Use math vocabulary
Some explanation
Some unclear writing
Not explaining
Guessing
Hard to read
🎓 Teach Each Other
Everyone can explain
Help each other understand
Some can explain
Only one understands
Rushing
💪 Perseverance
Do not give up
Try different strategies
Keep thinking
Try, but stop when stuck
Give up quickly
🔢 Mathematical Thinking
Justify answers
Look for patterns
Check if it makes sense
Some reasoning shown
Limited explanation
Just answers
No explanation
Guessing
🎲 Random Groups
00:00.0
05:00
About
I'm Peter Mant, a British-born math teacher with twelve years of experience teaching on both sides of the Atlantic — first in London public schools, then in New Jersey since 2019, where I currently teach middle school at PS 5 in Jersey City.
I discovered Peter Liljedahl's Building Thinking Classrooms framework and it transformed the way I teach. The name comes from a core BTC practice — passing the marker on the vertical surface so every student is actively doing the thinking, not just one. This toolkit grew out of a desire to make BTC genuinely easy to run day-to-day: randomising groups, picking students, timing tasks, and generating thinking questions.
