Hidden circles Student activity Play

Hidden circles Whiteboard exercise Play

How do you measure the length of a curve? Student activity Play

How far is the horizon? Student activity Play

How many times? Student activity Play

How many times? Whiteboard exercise Play

How much do we have to pay? Student activity Play

How plants receive and transform information about day length Animation Play

How to construct a regular hexagon Animation Play

How to measure gravitational acceleration? Student activity Play

How to measure gravitational acceleration? Slideshow Play

How to measure gravitational acceleration? Whiteboard exercise Play

Image in a microscope Whiteboard exercise Play

Images in lenses Student activity Play

Images in lenses Animation Play

Imperial units of length Student activity Play

Imperial units of length Animation Play

Imperial units of length Student activity Play

Imperial units of length – equal measures Whiteboard exercise Play

Induction of free oscillations Animation Play

Infra-red radiation used in spectroscopy Student activity Play

Inscribed angle in a semicircle Student activity Play

Intersection points of two circles Student activity Play

Ionic and atomic radii Whiteboard exercise Play

Ionic and atomic radii Student activity Play