Roots of a polynomial Student activity Play

Rounding a number Animation 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

Satellite television Slideshow Play

Satellite television Student activity Play

Ships Animation Play

Short-sightedness Animation Play

Sides of a line Student activity Play

Sides of a line Whiteboard exercise Play

Sight defects Student activity Play

Sight defects Student activity Play

Sight defects Simulation Play

Small steps Class activity Play

Small steps Whiteboard presentation Play

Solution of the equation ax 2 + bx = 0 Student activity Play

Solution of the equation ax 2 = b Student activity Play

Solution of the quadratic equation Whiteboard exercise Play

Solving problems Whiteboard exercise Play

Solving problems Student activity Play

Solving problems involving direct proportion Student activity Play

Sound in water Whiteboard exercise Play

Sound intensity Class activity Play