Teaching toolkit
Open problem-solving session
A rich problem with a low floor and a high ceiling: everyone can get started, but no one finishes quickly. Strategies matter more than finding the one solution.
How the method works
- 1
Present the problem without giving away the solution; answer questions to check understanding.
- 2
Individual start: note down your own initial access details (prevents free-riding).
- 3
Team phase: Compare approaches, continue working together, and document dead ends.
- 4
Whole-class check-in: share strategies (not solutions!).
- 5
Consolidation: Compare solution methods and identify heuristic strategies.
Material
- Anchor problem
- Teaching material ideas
- Hint cards
You can find free, ready-made worksheets for the work phase in the TeachPie Marketplace , sorted by subject and grade, in three levels.
Common pitfalls in practice
- A low-floor entry point and scaffolded support must be available
Variants
- With strategy cards offering step-by-step support (first a prompt, then a more specific tip).
- Problem of the month: the same task develops over several weeks.
In TeachPie, the planning AI suggests Open problem-solving session automatically when it fits the phase, timing, and class, including ready-to-use materials.