A machine to make charges was invented in 1929 by a young American called Van de Graaff. Huge machines, some over ValueUnit{30...

Teaching Guidance 11-14 14-16

All the energy transfers that you demonstrate will ultimately end up warming the atmosphere, or surroundings. There has been...

Teaching Guidance 11-14 14-16

Radiation extends way beyond the visible spectrum, with both longer and shorter wavelengths. The longer the wavelength, the...

Physics Narrative 11-14

There is a strong tradition of beginning physics with careful measurements of volumes and masses and calculations of densities...

Teaching Guidance 11-14

Avoid giving students instructions that tell them what they are going to see. With patience and care, even demonstration...

Teaching Guidance 11-14 14-16

Physics, more than any other science, can be demonstrated principle after principle by direct and simple experiments. In some...

Teaching Guidance 11-14 14-16

Given some radiation, how can one tell whether or not it has wave properties? Superposition experiments offer an answer. Radio...

Teaching Guidance 11-14 14-16

In water whose depth is large compared to the wavelength, the wave speed expression contains two terms, one for gravity...

Teaching Guidance 11-14 14-16

Conduction is the way in which energy is transferred (through heating by contact) from a hot body to a cooler one (or from the...

Teaching Guidance 11-14 14-16

This is a design and make activity through which you can review the idea of a complete circuit with the pupils and help them...

Classroom Activity 11-14

Having had the chance to think through their ideas aided by the diagnostic questions, the pupils are now shown a real circuit...

Classroom Activity 11-14

The rope loop is presented as a teaching model, which provides a way of helping pupils develop an understanding of abstract...

Classroom Activity 11-14