Ionic radii of the s-block elements Student activity Play

Ionisation energy Student activity Play

Ionization of an atom Whiteboard exercise Play

Is a practical demonstration reliable? Student activity Play

Is a practical demonstration reliable? Whiteboard exercise Play

Isosceles triangles – solving problems Whiteboard exercise Play

Jupiter's moons Whiteboard exercise Play

Lattice formation enthalpy Student activity Play

Lattice formation enthalpy Whiteboard exercise Play

Lena's bike Whiteboard exercise Play

Lena's birthday cake Whiteboard exercise Play

Length constructions Simulation Play

Length constructions Student activity Play

Length contraction (Lorentz-Fitzgerald contraction) Student activity Play

Length contraction (Lorentz-Fitzgerald contraction) Glossary Play

Length contraction (Lorentz-Fitzgerald contraction) Whiteboard exercise Play

Length of a side of a cube Whiteboard exercise Play

Length of pencils Animation Play

Lengths of edges of the cubes Whiteboard exercise Play

Lens equation and magnification Student activity Play

Lens equation and magnification Whiteboard exercise Play

Locus Student activity Play

Locus of all the points equidistant from two points Simulation Play

Long arm, small force Student activity Play

Magnification in relation to the focal length and the distance from the mirror Animation Play