A new model of multiplication via Euclid JJ Crabtree Vinculum 53 (2), 16-18, 21, 2016 | 3 | 2016 |

Fun in Podo’s Paddock: New Ways of Teaching Children the Laws of Sign for Multiplication and Division (and more!) JJ Crabtree Challenges in Mathematics Education for the Next Decade. 14th International …, 2017 | 2 | 2017 |

The Lost Logic of Elementary Mathematics and the Haberdasher who Kidnapped Kaizen JJ Crabtree 2016 Mathematical Association of Victoria (MAV) Annual Conference 53, 98-106, 2016 | 2 | 2016 |

Notes on the Origin of the First Definition of Zero Consistent with Basic Physical Laws JJ Crabtree The Origin and Significance of Zero: An Interdisciplinary Perspective 395, 187, 2024 | 1 | 2024 |

Snippet: A new reason negative multiplied by negative is positive JJ Crabtree Vinculum 52 (3), 20, 2015 | 1 | 2015 |

How mathematics teachers can explain multiplication and division in the manner of René Descartes and Isaac Newton. JJ Crabtree Proceedings of the 26th Biennial Conference of the Australian Association of …, 2017 | | 2017 |

Squaring the circle: A practical approach JJ Crabtree Vinculum 53 (4), 7-9, 2016 | | 2016 |

Representationsof Negative and Positive Quantities on a ‘Brahmaguptan Plane’for India’s Primary Classes JJ Crabtree | | |