Reading out a percentage of a number from a diagram Whiteboard exercise Play

Reading out from the graph the  x- and  y-intercepts of a linear function Simulation Play

Reflection symmetry in the coordinate system in the lines x = a and y = b Student activity Play

Regular polygons – the equilateral triangle Student activity Play

Regular polygons – the square Student activity Play

Relative position Student activity Play

Resolution of optical devices Animation Play

Resolution of optical devices Student activity 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) Whiteboard presentation Play

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

Satellite television Student activity Play

Scientific notation – remedial Animation Play

Secrets of functions Animation Play

Segments Whiteboard exercise Play

Selected physical properties of oxides Chart Play

Sequence of proteins and point mutations Animation Play

Simple and giant molecular solids Whiteboard presentation Play