http://www.vectorkids.com/vkfractions.htm - harilike murdude äratundmine, pole keeruline
http://www.primarygames.com/fractions/4a.htm - jagame pitsat
http://www.bbc.co.uk/schools/ks2bitesize/maths/number/fractions/play.shtml - harilike murdude järjestamine, veidike keerulisem