Number Talks
How would you split these numbers into 2 groups?
What other numbers would fit into your groups? What wouldn't fit?
How would you split these numbers into 2 groups? What other numbers would fit into your groups? What wouldn't fit? A new problem style we've been playing around with, as inspired by John Mason & Anne Watson's work on boundary examples.
— Maths Teacher Circles (@MathsCirclesOz) September 23, 2020