Reflection symmetry of a figure in the coordinate system Whiteboard exercise Play

Regression line Class activity Play

Regression line Whiteboard presentation Play

Regular polygons – the dodecagon Student activity Play

Regular polygons – the square Simulation Play

Regular polygons – the square Student activity Play

Rewriting the sine using double-angle formulas for the tangent Animation Play

Ruler-and-compass constructions Class activity Play

Ruler-and-compass constructions Whiteboard presentation Play

Satellite television Student activity Play

Satellite television Slideshow Play

Secant and tangent of a function Animation Play

Second-order derivative at a local extremum Student activity Play

Second-order derivative at a local maximum Animation Play

Second-order derivative at a local minimum Animation Play

Sense and line of direction of the velocity vector Animation Play

Set of points in a coordinate system Student activity Play

Set of points in a coordinate system Whiteboard exercise Play

Sides of a line Student activity Play

Sides of a line Whiteboard exercise Play

Sides of the triangles Animation Play

Similar functions – similar graphs Whiteboard exercise Play

Similar functions – similar graphs Student activity Play

Simple trigonometric equations Whiteboard presentation Play

Simple trigonometric equations Class activity Play