Becoming mathematicians – Flexible additive thinking

Explore, expand and zoom into the critical components, or “molecules”, in the development of students' knowledge and understanding in additive thinking, including thinking flexibly about numbers, thinking flexibly about the operations, using benchmarks and using foundational facts.


This course is for all K-8 staff wishing to learn about flexible additive thinking.

The video is about 20 minutes long. You might like to watch it on your own or with your colleagues. If you are working with your colleagues, allowing at least an hour would provide you with time to pause the video to discuss key points and play with some mathematical ideas.

Mode of delivery

Becoming mathematicians: Flexible additive thinking is available through MyPL.

Additional professional learning

Flexible additive thinking is a part of the Becoming Mathematicians series of bite-size on-demand professional learning. These are short, focused mathematical videos and resources that explore important mathematical concepts from K-8. They are designed to be completed in one session with suggested opportunities to further explore ideas in practice.

These include:

Contact us

Contact the NSW Mathematics Professional Learning team for further information.


  • Early Stage 1
  • Stage 1
  • Stage 2
  • Stage 3
  • Stage 4
  • Teaching and learning

Business Unit:

  • Educational Standards
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