I start off by breaking small bits of the sculpy clay and kneading them until they are very soft. And when I say small bits, I mean really small bits. We went for lots of colors but you could pick and choose colors to suit your recipient or holiday.
The children can then take the soft bits of clay and mash them together in any way they like. Let them mix, knead and smash the pieces together for as long as they like.
Once the pieces are mixed to their satisfaction hand out the rolling pins and show the kids how to roll over the clay to smooth it all out. I have them roll it out to about a 1/4" thickness.
Now it's time for the cookie cutters. I used a very small heart cookie cutter but you can use whatever size and shape your heart desires. We managed to cut out three small hearts from our little blob of clay and after rerolling it got another bigger heart.
They are now ready to be cooked. They should cook in a 275 degree oven for about 12-14 minutes but I start checking them about 10 minutes in. I also line our cookie sheet with aluminum foil. No need for vegetable spray or anything. I line it because I don't like to mix something I use for food stuff with non edibles. They will continue to harden up as they cool.