1 triplet = 1 amino acid Illustration Play

1,1-dichloroethane Animation Play

1-bromopropane reactions Animation Play

1-chloropentane Animation Play

1-chloropropane Animation Play

13 names from the phone book Whiteboard exercise Play

16-square-cm square Whiteboard exercise Play

1°, 2° and 3° carbocations Animation Play

2-chloropropane Animation Play

2-D representation Animation Play

2-D representation Whiteboard exercise Play

2-D representations of 3-D objects on triangular dotty paper Student activity Play

2-D shapes Student activity Play

2-D shapes Whiteboard exercise Play

2-D shapes around you Slideshow Play

20 common amino acids Chart Play

'27 less' function Whiteboard exercise Play

2D and 3D interference Student activity Play

2D and 3D interference Animation Play

2D and 3D interference Animation Play

2D and 3D interference Whiteboard exercise Play

3-D interpretation Animation Play

3-D shapes in architecture Slideshow Play

4-square-inch square Whiteboard exercise Play

52 cards Animation Play

A 40-year-old man Illustration Play

A balance as a type of force gauge Student activity Play

A balance as a type of force gauge Whiteboard exercise Play

A balanced diet Slideshow Play

A balanced diet Student activity Play