Reflection symmetry Animation Play

Reflection symmetry Whiteboard exercise Play

Reflection symmetry in the coordinate system in the line y = x Student activity Play

Reflection symmetry in the coordinate system in the line y = –x Student activity Play

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

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

Root of any order as a power Student activity Play

Root of any order as a power Whiteboard exercise Play

Roots and the index law for the power of a power Animation Play

Roots as powers Whiteboard exercise Play

Roots as powers Student activity Play

Roots of roots – finding true equations Whiteboard exercise Play

Roots of roots – more examples of true or false equations Whiteboard exercise Play

Rounding decimals Whiteboard exercise Play

Rounding decimals to 0.1 or to 0.01 Animation Play

Rounding decimals to 10–1 or to 10–2 Student activity Play

Rounding to the nearest power of 10 Whiteboard exercise Play

Ruler-and-compass constructions Class activity Play

Ruler-and-compass constructions Whiteboard presentation Play

Satellite television Student activity Play