Site 
Description 
Applied Calculus

This site has tutorials and questions following a textbook model. Some parts of it are at university level. 
Bitesize Revision 
This site has revision note and questions for students to try. 
Dave's Short Course in Trigonometry 
Notes and questions on trigonometry. 
Download Graph 
This (free!) software allows you to draw 2D graphs in Cartesian, parametric or polar form and analyse them e.g. with tangents and normals. It also supports relational (implicit) input and things like animations. Can be used as a plugin for Microsoft Word. 
Find the Error! 
Your task is to find the fundamental, commonlymade errors that make these calculus "proofs" lead to contradictions such as 2=1. 
GoodQuestions Project  Small questions from the GoodQuestions Project at Cornell University, aimed at quickly allowing students to see how deeply they understand concepts. Because this resource was designed for use in the first year of university, some parts of it may be irrelevant. 
Karl's Calculus Tutor 
This site explores calculus concepts and theorems, illustrating them with stories. 
Khan Academy  This site has video tutorials on a wide variety of topics. 
Maths First 
Massey University site with notes on algebra, trigonometry, integration and differentiation. Some parts may be beyond NCEA. 
Mathsreach  Website managed by the New Zealand Institute of Mathematics and its Applications (NZIMA) which showcases reallife mathematical stories: video interviews with mathematicians explaining what they do for a living, information on careers possible with mathematics, and more. 
NZ Centre of Maths 
Free maths resources based on the NZ Curriculum. 
NZQA Scholarship Calculus Page 
This page has important information about the Scholarship Calculus exam, as well as resources in the form of past exams and marking schedules. 
Purplemath Algebra 
Algebra notes and worked examples, across many levels. 
Scholar  Complex Numbers 
Notes, interactive java applets and exercises on complex numbers. 
SCool 
This site has notes, revision material and examstyle questions for differentiation, integration, trigonometry and real algebra. 
Studyit L3 / Scholarship Maths Forums 
Discuss maths questions or read others' questions and answers. 
Virtual MathLab College Algebra 
A series of tutorials on algebra, with practice tests. 
Wolfram Alpha 
The repository of all mathematical knowledge, which includes a sophisticated engine for evaluating mathematical expressions and solving equations. 