Arrangements in boxes – identical socks Whiteboard exercise Play

Arrangements of the objects Animation Play

Arrangements of the objects Animation Play

Arrangements – putting five balls into five baskets Whiteboard exercise Play

Arrangements – ten explorers Whiteboard exercise Play

Arrangements – throwing a die Whiteboard exercise Play

Arranging metals according to increasing reactivity Animation Play

Arranging metals according to their increasing reducing power Simulation Play

Arterial hypertension Slideshow Play

Arterial hypertension Whiteboard exercise Play

Arterial vessels Illustration Play

Arteries and the pulse Whiteboard exercise Play

Arteries and veins Slideshow Play

Arterioles and capillaries Whiteboard exercise Play

Arthropods (phylum Arthropoda) Illustration Play

Artificial DNA Whiteboard exercise Play

Artificial kidney – dialysis machine Illustration Play

Artificial kidneys Whiteboard exercise Play

Artificial pacemaker Illustration Play

Artificial regulation of pregnancy and labour Illustration Play

Artificial respiration Animation Play

Artificial satellites of the Earth Whiteboard exercise Play

Artificial satellites orbiting the Earth Slideshow Play

Artificial selection Slideshow Play

Artificial sweeteners Illustration Play

Ascaris lumbricoides Whiteboard exercise Play

Ascaris lumbricoides infection Slideshow Play

Ascaris lumbricoides – female and male Illustration Play

Ascomycota Illustration Play

Asexual reproduction Whiteboard exercise Play