Solids, liquids and gases Class activity Play

Survivorship curve for frogs Animation Play

Survivorship curves and death rates in populations Student activity Play

The diversity of respiratory surfaces Student activity Play

The growth stages of the frog Whiteboard exercise Play

The organs of the frog Whiteboard exercise Play

The role of transpiration Slideshow Play

The sizes of cells and their components Student activity Play

The stages of frog development Whiteboard exercise Play

The types of respiratory surfaces Whiteboard exercise Play

Types of habitat Student activity Play