
The making of graphene
Description of chemical vapour deposition to make large area graphene samples
More details | Watch now
Centripetal force – how do we measure it?
A short video showing a simple classroom method of checking the way in which this force is related to mass, speed and radius.
More details | Watch now
Going round in circles – how do we do it?
A presentation showing both the ideas about centripetal force and a simple classroom method of checking the way in which this force is related to mass, speed and radius.
More details | Watch now
Measuring the speed of pulses
A short clip showing the experimental measurement of the speed of electrical pulses in a cable - a large fraction of the speed of light.
More details | Watch now
Measuring the speed of sound
A presentation showing how to measure the speed of sound over a short distance on a laboratory table.
More details | Watch now
Chemical Equations – and how we construct them
An introduction into the writing down of fully balanced chemical equations. The process is explained starting with word equations, finding all the relevant formulas and then working with some useful rules for finding the correct coefficients in the b....
More details | Watch now
Oxidation Numbers and Equations
The concept of oxidation and reduction is explained and generalised using oxidation numbers with ionic and covalent examples. Several equations are balanced, using the oxidation number method to fix various atomic ratios.
More details | Watch now
All about conic sections
This is a fully interactive program allowing many useful ways of investigating conic sections both visually and algebraically. It comes with a full set of explanatory notes for both teacher and pupil.
More details | Watch now
Estimation – Educated Guesswork?
How can we make sensible estimates of very large numbers? It is often very important to know the size of an unknown number, at least to within a factor of ten.
More details | Watch now
All numbers are not equal
An introduction to the various types of numbers which are recognised as important.
More details | Watch now
Fractions 2
An approach to adding and subtracting fractions, using an understanding of the processes involved.
More details | Watch now