Alkyl derivatives of benzene Animation Play

Alkyl groups Student activity Play

Alkyl groups Whiteboard exercise Play

Alkyl groups as side substituents Animation Play

Alkylation of ammonia Animation Play

Alkylation of ammonia and amines Student activity Play

Alkylation of ammonia and amines Whiteboard exercise Play

Alkylation of benzene by the Friedel–Crafts method Student activity Play

Alkylation of benzene by the Friedel–Crafts method Whiteboard exercise Play

All or nothing response Animation Play

All salts are electrolytes Animation Play

Allele frequency in a gene pool Animation Play

Alleles Illustration Play

Allopatric speciation Student activity Play

Allopatric speciation Whiteboard exercise Play

Allopatric speciation in the greenish warbler Slideshow Play

Allopolyploidy Slideshow Play

Allotropes of carbon Animation Play

Alloys of iron Slideshow Play

Alpha decay Animation Play

Alpha radiation Animation Play

Altering the x- or the y-scale Student activity Play

Altering the x- or the y-scale Whiteboard exercise Play

Altering the x-scale Simulation Play

Altering the x-scale Whiteboard exercise Play

Altering the x-scale Game Play

Altering the x-scale of the graph Simulation Play

Altering the x-scale – preliminary Student activity Play

Altering the x-scale – summary Student activity Play

Altering the x-scale – the rule Student activity Play