Average speed in the mountains Animation Play

Down the hill Student activity Play

Exponential function Animation Play

Graph of an exponential function Student activity Play

Interactions between tectonic plates Student activity Play

Mitochondria and chloroplasts Student activity Play

Structure and functions of the small intestine Animation Play

The mitochondrion Slideshow Play

The small intestine – further digestion and absorption of carbohydrates; proteins and fats Student activity Play

What happens when two tectonic plates come into contact with each other? Animation Play