This microworld permits the student to play with combinations and arrangements of four ice cream flavors (colors) to two ball icecreams. User makes an icecream with the spoon. The spoon is dragable with a single clik on it. In order to empty the spoon just feed the cat. Cliking on the camera takes a photo of the icecream. Students could: 1. produce all the possible photos 2. produce all the possible ice creams 3. play with the prices (e.g. what icecream can we buy with 5 Euros etc) The prices of the icecreams are changing with click. User can erase photos in reverse order clicing the delete button that appears when at least one photo is visible. Have a good time and be carefull not to explode the cat! :-) I changed things a bit and added some.