Worksheet and web based activities

Students really enjoy the independence of the web based activities pitched at their level. They like coming to tell you what they have achieved and working on different things to each other, The worksheet was created using 'discovery schools puzzle maker' but I don't have an answer sheet - sorry! You&'ll have to work it out before the lesson or set it as a challenge. The last challenge is really hard and requires a lot of literacy skill as well as ecology knowledge.