A sophisticated look and feel reflects the higher year level audience, and positions these titles as premium products. Strong colours and clearly structured typography give impact, and the design gives the impression of a tome which contains important knowledge, a big black book. The images tie into the idea that maths is omnipresent in nature and the world around us and connote mathematical themes like geometry, symmetry, repetition. Each mathematical stream is colour coded across the two year levels to create a clear link between the two titles. Highly structured internals are clear, clean and easy to follow.