At the moment with cookie crisp/golden nuggets/newquick/cheerios/coco shreddies/frostie shreddies there is free cd rom IN the box. They are the Dorling Kindersley 'Become a Science explorer', 'world explorer' and 'human body explorer'. For ages 6-10.They normally sell at £9.99, so a big of a bargain! I bought mine 3 for 2 at Morrisons!
There is also two more on shreddies, honey nut shreddied wheat for 8-16 yrs.
My 5 yo tried it and enjoted it. Its good for general knowlege and mouse control.
Also keep an eye out for 'horrible history' cd with some of the kellogg's cereal boxes Asda definately has them 6 to collect I have got 3 so far. Children still to listen to them. will let you know what we think.
I loaded the science explorer one today - must be the one for up to 16 as the quiz is v hard! I had fun though. Pity it's American. Not being anti - US just think I'd know more about UK nobel prize winners!