This site is so detailed, clear and easy to follow step by step. This activity showcases dinosaurs, but the lesson covers food webs in general too. The materials are very accessible with the 2 printables, but even if you can't print, you can make your own cards without writing all the info, maybe just the names of the dinosaurs. You can still use the printables open on a computer or tablet as a reference. Great take it further questions too!