Alkylation of benzene by the Friedel–Crafts method Student activity Play

An interesting number Student activity Play

Angle-Angle property (AA) Whiteboard exercise Play

Application of X-rays Student activity Play

Applying the integration by parts method Animation Play

Applying the integration by substitution method Animation Play

Applying the secant method Animation Play

Approximate solution of equations Class activity Play

Approximate solution of equations Whiteboard presentation Play

Approximation method Simulation Play

Approximation using the secant method Simulation Play

Are the two triangles similar? Animation Play

Areas of similar figures Student activity Play

Atomic number and mass number Student activity Play

Average Animation Play

Basic properties of probability Whiteboard exercise Play

Basic properties of probability Student activity Play

Biocoenoses – method of study Whiteboard exercise Play

Biocoenoses – method of study Student activity Play

Biofiltration method Slideshow Play

Biological methods of controlling plant diseases Illustration Play

Bromide-bromate reaction: a kinetic study Student activity Play

Cardinal number properties for finite sets Student activity Play

Cardinal number properties for finite sets Whiteboard exercise Play

Changes in the properties of the oxides of Period 3 Whiteboard exercise Play