Gather up a variety of foods made from grains. Cereal, oats, pasta, rice, breads, cookies, crackers, to name a few. Put them in plastic containers or plastic bags. Then do a show-and-tell type demonstration and present all the types of grains and grain products that were brought in. There is a worksheet listing several types of grains and your learners can write the types of products that are made from each of these grains.