Number and Algebra Thinker's Keys 3-6
The Thinker’s Keys are a set of question starters developed by Tony Ryan. They are designed to unlock creative thinking and generate novel ideas.
Incorporating the Thinker’s Keys into your maths lessons gives students meaningful, open-ended tasks that inspire both critical and creative thinking. The activities are engaging, fun, and thought-provoking!
Outcome Codes:
Why Choose The Number and Algebra Thinker's Keys 3-6?
- All tasks are open-ended and engaging.
- Your students will love applying their maths knowledge to exciting, real-world challenges that spark creativity and critical thinking.
- Three activities are provided for each Number and Algebra topic (e.g., Whole Numbers).
- Literally just print and go!
What's Included?
- 18 open-ended Thinker's Key activities for Stage 2
- 18 open-ended Thinker's Key activities for Stage 3
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Free Resources from The Sydney Teacher
Get free ideas and inspiration to use in your classroom today

Maths Warm Up: Stand Up Sit Down
Stand Up, Sit Down is one of those quick, no-prep maths games I always come back to in my classroom. It gets students out of their seats, thinking fast, and making decisions as they decide whether to stand or sit based on maths statements I give them. It is simple, energetic, and a great way to build critical thinking and engagement from the very start of the lesson.

Maths Warm Up: Last Person Standing
Last Person Standing is one of those quick, no-prep maths games I like to pull out when I want my class instantly focused and thinking. It’s a fast-paced place value challenge where students make number decisions, stay alert, and try to be the last one still in the game.

Maths Warm-Up: The Hot Seat
The Hot Seat is one of my favourite quick maths classroom games. One student sits in the “hot seat” and asks questions to figure out a hidden number or answer, while the class responds only with yes, no, or maybe, which gives clues to help solve the problem under time pressure. It’s simple, engaging, and builds reasoning fast.











