Reaction of potassium manganate(VII) with hydrogen peroxide Animation Play

Reaction rate Class activity Play

Reaction rate Whiteboard presentation Play

Reaction yields Student activity Play

Reaction yields Whiteboard exercise Play

Reactions between Period 3 elements and water Whiteboard exercise Play

Reactions between Period 3 elements and water (2) Student activity Play

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

Reading out a percentage of a number from a diagram Student activity Play

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

Real gases Student activity Play

Recoil Student activity Play

Recoil Simulation Play

Recoil Animation Play

Recoil Whiteboard exercise Play

Recoil Student activity Play

Recoil Animation Play

Recoil Whiteboard exercise 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

Relationship between momentum and energy Student activity Play

Relationship between momentum and energy Whiteboard exercise Play

Relationship between the acceleration and mass Animation Play

Relationship between weight and mass Animation Play