Dijkstra's algorithm finds the shortest path for a given problem. Dijkstra's algorithm can be used to find the shortest route between two cities. This algorithm is so powerful that it not only finds the shortest path from a chosen source to a given destination, it also finds all of the shortest paths from the...

This resource from the Institute of Physics, describes how electrocardiagrams (ECGs) record the activity of the heart through electrodes placed on a patient's skin. The teacher's notes contain an introduction to ECGs and lesson notes for the associated PowerPoint file. A mark scheme for the worksheet is also...

There are teacher notes and student materials which describe the research into the potential effects of climate change on a Coralline algae species. Curriculum links include biodiversity, sampling techniques, student t test, Simpson’s Index, photosynthesis, climate...

This resource, produced by SEPNet and Queen Mary University of London, uses Lego to represent the building blocks of matter. Different colour and size Lego bricks are assigned to protons, neutrons and electrons. Fusion is shown by joining bricks together and fission by breaking large collections of bricks apart....

This challenge, from Practical Action, requires students to design and build a model structure that will enable farmers to grow crops even in an area that may become flooded. A floating garden, built on a base of aquatic weeds, is a low cost and sustainable way of allowing people to grow vegetables. The resource...

The network flow problem involves finding the optimum route through a flow network; a directed graph where each arc has a capacity and each arc receives a flow. Typical examples include: evacuation plans and delivery services. The problem involves students analysing the plan of a school canteen and deciding whether...

Produced in 2015, these resources look specifically at how genes can be altered in plants and how bacteria are central to genetic engineering techniques. Genetically modified (GM) crops offer the potential to help improve food security though this still remains...

A number of scenarios are presented to encourage debate around genome sequencing. All teaching materials are provided.

• The interaction of genetic and environmental factors in influencing phenotype
• Ethical implications of genetic screening

Curriculum links:

• Sequencing...

This in-service training pack, from the Centre for Science Education, was developed to help subject leaders to make effective use of the Engineering a Better World resources. The aims of the pack are to:

*enable leading teachers to develop their team's experience and expertise when integrating engineering...

This presentation and collection of short activities, from Eurostemcell, introduce basic stem cell concepts and include teacher’s notes with each slide and useful diagrams. The materials include:

 Presentation: Introducing stem cells

• Stem cell biology basics: for post-16 students,...

This resource is an interactive activity which aims to provide an introduction to the lowland heathland habitat. The five topics relating to lowland heathlands covered by the resources include: • The biotic components of lowland heathlands, focusing on plants • The biotic components of lowland heathlands, focusing...

Linear Programming involves creating a function that represents a real life problem. The aim is to optimise this function given certain constraints. Simple examples of linear programming will have few variables and constraints, however, real life situations will have many more variables and constraints that will...