Alphabet activity:

http://learnenglishkids.britishcouncil.org/en/songs/the-alphabet-song

Light and Dark games and activities:

http://www.bbc.co.uk/schools/scienceclips/ages/5_6/light_dark.shtml

http://www.sciencekids.co.nz/gamesactivities/lightdark.html

Shape:

http://www.bbc.co.uk/schools/ks1bitesize/numeracy/shapes/fs.shtml

http://www.primaryresources.co.uk/online/longshape3d.html