Drawing the tangent Animation Play

Early attempts to classify chemical elements Whiteboard exercise Play

Early attempts to classify chemical elements Student activity Play

Early attempts to classify chemical elements (2) Student activity Play

Effect of substances dissolved in water Slideshow Play

Effects of point mutations Student activity Play

Effects of temperature and volume on gas pressure Slideshow Play

Eka-aluminium and eka-silicon Whiteboard exercise Play

Eka-aluminium and eka-silicon Chart Play

Electric field of a point charge Simulation Play

Electric field of a point charge Whiteboard exercise Play

Electric field of a point charge Student activity Play

Electric field of a system of point charges Whiteboard exercise Play

Electric field of a system of point charges Student activity Play

Electric field of a system of point charges Slideshow Play

Elements Whiteboard presentation Play

Elements Class activity Play

Emptying a bathtub Whiteboard exercise Play

Energy transfer Student activity Play

Energy transfer during chemical reactions Student activity Play

Enlargement on the plane Animation Play

Enlargement with centre at point (0, 0) Animation Play

Enlargements in the coordinate system Student activity Play

Enlargements in the coordinate system Student activity Play

Enlargements in the coordinate system Whiteboard exercise Play