Construction of regular polygons Student activity Play

Construction of triangles Animation Play

Corresponding sides Whiteboard exercise Play

Corresponding sides and angles Student activity Play

Coulomb's Law Whiteboard presentation Play

Coulomb's Law Illustration Play

Coulomb's Law Whiteboard exercise Play

Coulomb's Law Class activity Play

Coulomb's Law Student activity Play

Creating symmetrical triangles Whiteboard exercise Play

Crossing lines cut by two parallel lines Animation Play

Decay law Class activity Play

Decay law Class activity Play

Decay law Whiteboard presentation Play

Decay law Whiteboard presentation Play

Definition of enlargement Student activity Play

Demonstration of the formula for the area of a triangle Whiteboard exercise Play

Demonstration or proof? Animation Play

Demonstration or proof? Student activity Play

Derivation of the formula Animation Play

Different force gauges Animation Play

Dihybrid crosses and Mendel's second law Whiteboard exercise Play

Dihybrid crosses and Mendel's second law Student activity Play

Diminution Animation Play

Direct current circuit Class activity Play