Cooking and baking demonstrations are good projects for older youths. The demonstrators must be able to accurately measure and stir while speaking -- and without making a mess. Demonstrators should have a finished product as well to hand out or show the audience at the end. Instead of waiting for food to chill or cook, kids can place the finished product, such as cookies or barbecue chicken, in a cardboard oven or refrigerator. The finished food can be presented at the end of the speech by taking it out of the handmade appliance, thus demonstrating the procedure and cutting time.
Science demonstrations can show how a volcano erupts, the steps to open a computer program, how to curdle milk, how to send a text message or how a light bulb works. Younger youths may choose to demonstrate how to plant a seed, how to differentiate between trees in the woods or backyard, how to collect butterflies or how to make a first aid kit.
Craft making offers a range of demonstration opportunities. Woodworking, painting, origami, sewing, photography and scrapbooking are a handful of topics relevant for older kids. Kids should include information about where to find craft material, such as recycled materials at home or purchased at a craft store. Younger kids can demonstrate how to fingerpaint, make a Christmas tree ornament, carve a pumpkin, make a corn husk doll or build a kite. Kids can also demonstrate how to use their craft by giving it as a gift or decorating.
Home improvement demonstrations encompass an array of topics, such as fixing the house and creating a landscape design. Demonstrators can teach the audience about the tools, proper handling and procedure followed to install a window, clean carpet, fix an electrical outlet or build a coffee table. Outdoor home improvements can demonstrate how to design a flowerbed and choose plants or how to paint a house, choose yard decor or properly fly the American flag.