Regular polygons – the equilateral triangle Student activity Play

Regular polygons – the square Student activity Play

Relative position Student activity Play

Resolution of optical devices Student activity Play

Resolution of optical devices Animation Play

Rhombuses Simulation Play

Rhombuses and squares Student activity Play

Road in the coordinate system Animation Play

Rotating a half-turn – symmetry with respect to a point Student activity Play

Rotation in the coordinate system Student activity Play

Rotation in the coordinate system Whiteboard exercise Play

Rotations Student activity Play

Rotations Whiteboard exercise Play

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

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

Satellite television Student activity Play

Scientific notation – remedial Animation Play

Second derivative and the local extremum Animation Play

Second-order derivative at a local extremum Student activity Play

Second-order derivative at a local extremum Whiteboard exercise Play

Second-order derivative at a local extremum Whiteboard exercise Play

Second-order derivative at a local maximum Animation Play

Secrets of functions Animation Play

Segments Whiteboard exercise Play

Selected physical properties of oxides Chart Play