A spiders web is made from silk. Spiders can spin different kinds of silk. Some strands are sticky. Other strands are dry. Find out more in Spiderwebs a title in the Natures Engineers series. Natures Engineers is a series of AV2 media enhanced books. Each title in the series features easy-to-read text stunning visuals and a challenging educational activity. A unique book code printed on page 2 unlocks multimedia content.