Recycling of household waste Whiteboard exercise Play

Recycling of household waste Student activity Play

Recycling of paper, glass and metal Whiteboard exercise Play

Recycling of paper, glass and metal Student activity Play

Roles of efficient utilization and recycling in environmental protection Slideshow Play

Sensors Animation Play

Solution of the equation ax 2 = b Student activity Play

Solving a quadratic equation Student activity Play

Statements about types of chemical reactions Whiteboard exercise Play

Statistics Slideshow Play

Statistics and data Student activity Play

Surface area of a cone – a conical paper cup Whiteboard exercise Play

The bleaching properties of chlorine Simulation Play

The dimensions of the paper sizes Whiteboard exercise Play

The nature of chemical reactions Student activity Play

The pH scale Student activity Play

The pH scale Student activity Play

The stability of alkaline-earth-metal carbonates Student activity Play

The technique of titration Student activity Play

Three more types of chemical reaction Student activity Play

Three types of chemical reaction Student activity Play

Time needed to cut some amount paper Whiteboard exercise Play

Type of indicators Slideshow Play

Using indicators Student activity Play

Using the formula for the surface area of a cone Student activity Play