Level 4 - Maths
The link will take you to the carousel interface. Click on the coloured squares at the bottom. the purple and red squares are level 4.
Have a go at these practice interactives to help learn new skills and knowledge in maths. Scroll down and have a go at 6th, 7th, or even 8th grade level. Find the best level to suit your needs.
This is an Australian site but is relevant to New Zealand. Click on the years 7, 8 or 9 links to the left. You will then see more links down the left to explore a variety of mathematical strands at Level 4.