ok i am a complete novice but i want to do some baking this week with the kids and i keep seeing silicon baking trays in the shops when i go to get supplies ... they seem to be everywhere from poundland to costco. So can someone please explain how to use them? Do you treat them as a traditional tin, or do you have to place them on a traditional baking tray? and special greasing? sorry if this sounds silly but the last thing i want is melted silicone seeping out of my oven whilst 4 children look on!