Assess what your students already know; you may be able to move quickly through this material if you feel that your class is...

Teaching Guidance 16-19

This episode requires students to develop their idea of electromagnetic radiation. Since they cannot see either the wave...

Lesson 16-19

This episode introduces the idea that vibrations can give rise to disturbances travelling outwards, i.e. to progressive waves...

Lesson 16-19

Students often confuse displacement/distance graphs (from which wavelength can be deduced) with displacement/time graphs (e.g...

Lesson 16-19