The GCSE Biology worksheet pack focuses on the topic of energy flow and feeding relationships. It is aimed at the CIE IGCSE course and covers topics 19.1 and 19.2. There are four worksheets for students to complete, covering the following subtopics: WS1 Energy flow between organisms and their environment and key definitons for the topic WS2 Food chains and energy transfer between trophic levels WS3 Food webs WS4 Pyramids of numbers and biomass Clear and comprehensive answer sheets are provided for each of the four worksheets. The accompanying PowerPoint has the worksheets and answers integrated into it, along with the key ideas for the students. Thank you for looking

This is a very useful and comprehensive resource for students studying A level Biology. A great refresher for the teacher too or someone teaching Biology who may not be so confident when it comes to teaching statistics. The resource is a 22 page booklet which covers all the key aspects of statistics required for Biology at A level. There are worked examples and questions for the students to work through. This booklet has been designed to be fully explanatory so that students can work through it independently. The booklet is fully comprehensive and no other resources are needed; all probability tables are given with the questions. The key topics covered in the booklet are: 1.) Why use statistics on data 2.) Calculating standard deviation and its meaning 3.) The student t-test 4.) The Spearman rank correlation coefficient 5.) The Chi-squared test The booklet should take approximately two 1 hour lessons to complete, dependent on how familiar the students are with statistics. Those studying A level Maths and Geography may be more confident working through the calculations and understanding the outcomes. A separate answer booklet is provided with answers to all questions given.