Regular tetrahedron Whiteboard exercise Play

Regular tetrahedrons Student activity Play

Relationship between electromagnetic force and the position of the conductor Simulation Play

Relationship between electromagnetic force and the position of the conductor Student activity Play

Relationship between electromagnetic force and the position of the conductor Whiteboard exercise Play

Relationship between momentum and energy Student activity Play

Relationship between the electromagnetic force and the length of a conductor Student activity Play

Resolution of optical devices Student activity Play

Resolution of optical devices Animation Play

Rotation Animation Play

Rotation Whiteboard exercise Play

Rotation Student activity Play

Rotation in the coordinate system Student activity Play

Rotation is a transformation Student activity Play

Rotation versus the position of equilibrium Slideshow Play

Rotation versus the position of equilibrium Student activity Play

Rotation versus the position of equilibrium Whiteboard exercise Play

Ruler-and-compass constructions Whiteboard presentation Play

Ruler-and-compass constructions Class activity Play

Ruler-and-compass constructions, locus (1) Class activity Play

Ruler-and-compass constructions, locus (1) Whiteboard presentation Play

SAS property of similar triangles Student activity Play

Satellite television Student activity Play

Satellite television Whiteboard exercise Play

Satellites Animation Play