A diagram of the formation of carbon-14 and its cycle in the atmosphere Illustration Play

C-14 carbon dating Animation Play

Decay reaction Whiteboard exercise Play

Development of pollen grains Illustration Play

Development of the embryo sac Illustration Play

Different magnitudes of forces Animation Play

Embryo sac development and egg cell formation Student activity Play

Large and small forces Student activity Play

Large and small forces Glossary Play

Large and small forces Simulation Play

Meiosis and the Mendelian law of segregation Slideshow Play

Meiosis in the human body Student activity Play

Natural carbon Animation Play

Pollen grain development and sperm cell formation Student activity Play

Radiocarbon dating Student activity Play

Radiocarbon dating Whiteboard exercise Play

The elements of life Chart Play

The elements of life Student activity Play

The examples of the elements Whiteboard exercise Play

The properties of β radiation Student activity Play

Using formulas Animation Play

Worked examples Student activity Play