Level 3 Calculus
StudyTime - all externals
Website: studytime.co.nz/resources/level-3-calculus/
YouTube playlist
Math is Fun - assorted topics
Depending on your maths stress levels, this resource's name may not exactly feel true...but Math is Fun will make NCEA more tolerable. It has everything from logs, to differentiation, to complex numbers, and so much more!
YouTube: infinityplusone
Channel: https://www.youtube.com/c/infinityplusone/playlists?view=50&sort=dd&shelf_id=3
Channel has videos on exam prep and strategy for the 'Differentiation', 'Complex Numbers' and 'Integration' topics.
YouTube: Mrs O'Gram's Maths
Channel: https://www.youtube.com/c/MrsOGramsMaths/playlists?view=50&sort=dd&shelf_id=2
Has videos on 'Differentiation', 'Integration', 'Complex Numbers', 'Trigonometry', and 'Simultaneous Equations'.
YouTube: Cushla Thomson
Channel: www.youtube.com/c/CushlaThomson/playlists?view=50&sort=dd&shelf_id=10
Has videos covering the externals ('Differentiation', 'Integration', and 'Complex Numbers') and some of the internals ('Conic Sections' and 'Trigonometry'). She's currently a maths teacher at Wellington College.
NZQA Past Papers - all externals
Graphing Software
Desmos: www.desmos.com/calculator
GeoGebra 3D: www.geogebra.org/3d
Everyone Calc student knows about Desmos, but many don't know its cousin, GeoGebra. GeoGebra is particularly useful in the 'Simultaneous Equations' topic, when you have to visualise 3D planes and how they intersect. It can be useful for 'Conic Sections' too.