Reactions in the gaseous phase Student activity Play

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

Reasons for the high reactivity of alkenes (2) Student activity Play

Recognising a differential equation with separable variables Whiteboard exercise Play

Recognising the general solution of a differential equation Whiteboard exercise Play

Recognizing the pressure equation Whiteboard exercise Play

Redox reactions Class activity Play

Redox reactions Whiteboard presentation Play

Reducing to vertex form Whiteboard exercise Play

Reducing to vertex form Student activity Play

Reducing to vertex form – example Animation Play

Reduction of price Whiteboard exercise Play

Risk of omission Animation Play

Risk of omission Student activity Play

Rolling down an inclined plane Student activity Play

Roots of equations Student activity Play

Roots of equations Whiteboard exercise Play

Roots of roots – finding true equations Whiteboard exercise Play

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

Roots of the quadratic equation – example Animation Play

Roots of the quadratic equation – example Animation Play

Salt hydrolysis Student activity Play

Salts of weak acids and strong bases Whiteboard exercise Play

Salts of weak acids and strong bases Student activity Play

Sample formulae Illustration Play