This online ecology practical, from SAPS, uses random sampling to measure the abundance of various different species on an area of grassland.

Objectives

To give students practice at

• using random sampling to measure the abundance of various different species on an area of...

In this resource from SAPS, students learn about random sampling, diversity and different measures of abundance, before looking at close-up photographs of quadrats and using the field guide to identify them. The resources are intended to help students develop skills and plant identification techniques before going...

This online ecology practical, by SAPS, is designed to give students an opportunity to see how systematic sampling can be used to

• investigate changes in species richness across a footpath
• the distribution of species across a footpath

These online exercises are not intended as a...

This is a very comprehensive resource from the University of Cambridge detailing the main functions of generic operating systems. It could be used as a reference or basis for a comprehension question sheet or preparing model answers for examination questions. Students will also see links with other topics such as...

These O.R. Society resources contain seven short films explaining what operational research is, how it is used in a variety of every day situations and what career opportunities the study of operational research affords. The sub collection contains problems to be used to introduce, practice or consolidate a variety...

This activity allows students to  research and present data, using live job and apprenticeship vacancy information found at plotr.co.uk as a stimulus.  Students practise using mathematical tools to present information. The activity will  familiarise pupils with...

A case study from Mathematics Matters which looks at the development of optical fibres and how mathematical models have simplified the process of producing them. Modern society relies heavily on a variety of networks, but we don’t fully understand how they behave. Mathematical network theory lets us create models...

This publication, from the Technology Enhancement Programme (TEP) covers optics and optical principles which are used in a wide range of products and communication systems. These include, for example, measuring instruments, cameras, machine tools, video cameras, CD players and fibre-optic-based communication...

This activity is an ideal way to introduce the concept of chirality and optical isomerism to students.

During the lesson they first learn to recognise ...

Produced by the Technology Enhancement Programme (TEP), these images are useful for adding to documents, presentations or for use with an interactive whiteboard. Mainly simple line drawings, they can be cut and pasted into documents and image processing applications. The images in this resource are related to the...

An article about chiral compounds and the chemistry of flavours like orange and spearmint.

Catalyst is a science magazine for students aged 14-19 years. Find out more about Catalyst magazine: www.stem.org.uk/catalyst

A podcast from the Planet Earth Online collection and the Natural Environment Research Council (NERC). With efforts to improve energy efficiency focused on green transport, sustainable power generation, growing your own food and reducing waste, it is often easy to forget that the very buildings we live and work in...

This Catalyst article explains how orchids have evolved over millions of years to have a close relationship with the insects which pollinate them. Like many plants, orchids rely on insects to carry pollen from one flower to another in order to reproduce. Many plants offer a reward to pollinators, and so do some...

From Nelson Thornes, these activities encourage students to analyse and discuss the advantages and disadvantages of organic farming compared with intensive farming. Students are asked to use the information in an article along with their own knowledge to decide whether there is a global future for organic farming,...