Learning and Teaching Mathematics, 28, June 2020
- From the Editor. Duncan Samson
- 'Our brains really don't like abstract ideas!' Using representations deliberately and carefully to help
students access abstract mathematics. Marc North
- Using combinatorial games to explore equivalences and differences. Adi Niv & Dorit Patkin
- Intercepts of cubic functions. Letuku Moses Makobe
- The power of prime factorisation. Duncan Samson
- The area of concave and crossed quadrilaterals in terms of their diagonals. Michael de Villiers
- The two arrows model for proportional reasoning. Patrick Chiro
- Apparent distance between the goal posts. James Metz
- A simple proof of Stewart's theorem. Yiu-Kwong Man & Kin-Keung Poon
- Axis intercepts and centres of circles: An alternative approach. Alan Christison
- Summing the reciprocals of the roots of a polynomial equation. Letuku Moses Makobe & Duncan Samson
- A simple proof of the area formula for convex quadrilaterals. Yiu-Kwong Man
- Constructing a bicentric quadrilateral. Victor Oxman & Moshe Stupel
- Proof without words: The perimeter of any right triangle is equal to the sum of the diameter of its incircle and twice the diameter of its circumcircle. Moshe Stupel & Jay Jahangiri
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