Using a diagram of an open tube an explanation of possible wave patterns is built up.  Firstly, the fundamental mode of vibration is drawn, followed by the second and third harmonics.  For each illustration the number of waves is calculated, i.e, ^λ/₄, ³/₄ λ and ^5...

This video explains how nodes and anti-nodes are formed in standing (stationary) waves.  It shows how the distance between two nodes = ^λ/₂.  A series of standing waves are drawn to show the fundamental wave and its harmonics.  The number of half wavelengths for the fundamental and second,...

This resource, from the Royal Observatory Greenwich, is a beautifully animated video giving a short overview of the life cycle of stars, but crucially how, from Earth, we can observe the different phases of star evolution by plotting all the...

Scratch is widely used in primary schools to teach children basic programming. This resource goes deeper, making use of the familiar Scratch environment to take students deeper into programming concepts such as:

• Algorithm design
• Parallel and sequential instructions
• Event-driven...

This video covers the basics of state changes in water. It explains how the distance between molecules and their motion can be used to explain the three states of water (solid, liquid and gas).  

Contrails occur when water vapour from jet engines condenses – only when the temperature and humidity conditions of the air is right. Contrails act like greenhouse gases. Marc Stettler from Imperial College, London is interested in guiding aircraft to fly where conditions are right, reducing contrail formation....

Produced in 2015, these resources look at research involving the use of nanoparticles and fluorescent proteins to track transplanted stem cells in living organisms.

They can be used to tackle a range of topics in post...

Hiba Khan keeps people's homes safe from flooding and erosion. She works for Mott MacDonald, keeping people safe and healthy by...