Build a food web activity

An activity that allows students to build a food web and work out the numbers of animals. Then asks them to see how changing the numbers of one animal changes the rest of the web. Requires: String, scissors and counters. Sheets need printing and photocopying. Includes results table and questions and a completed results table for the teacher. Also includes slides to incorporate into your lesson to review the activity. There is a version which is for more advanced students and a lower ability/starter activity version which is just to build the food web.