The Silk Spinners is the third part of Life in the Undergrowth. It wasn't just spiders but they were the main theme. Beautiful and amazing, even Labyrinth was fascinated. Here is some of the worksheets they did afterwards, maths and science are there but the language excercises (nouns/verbs and sentence structure). The first 3 belong to Kai, then it's Raven's Maze and his drawing of a catepillar, followed by Dante's and Labyrinth's efforts.