I use to make these for the kids in my class but this is the first one I made for my own. It was amazing to see how long it kept their interest. They poked it, put color in it, squished it and made jelly snakes out of it. I dissolved 4 packages of Knox gelatin into 3 cups of hot water. I sprayed a mold, (you can use a bowl, pie pan, cake pan, whatever) with cooking spray and then poured in the liquid. Then I put it in the refrigerator overnight. When it is solid, it plops right out of the mold. You could make a bigger one, the ratio is 3/4 cup of water to 1 packet of powder. You could just give the kids straws to poke through it. My son had the most fun doing that. You can pipe color into the mold by using droppers and colored water. You can tell by the last picture....they totally dissected the gelatin cake. A fabulous science experiment.