If you are teaching the IB Diploma programme for the first time then the changes from the 2014 Guide are not so relevant. Even so, it may be useful when it comes to using past examination questions (from May 2016 until November 2024). Most IB Diploma physics teachers however will be familiar with the syllabus based on the 2014 Guide and many will be teaching both syllabuses at the same time during the changeover year....