Growing the makings of your own salad indoors is a fun and easy way to bring greenery into your classroom and your diet. First, students research different varieties of lettuce from seed catalogs (online or request catalogs). Students will learn that different varieties of lettuce have different vitamins and minerals and look different (e.g., color, head, or leaf). Students will track the growth of their plants using the Lettuce Growth Chart. If you want to add an experimental element, students can grow the plants in different locations and compare the height, rate of growth, and color of their plants.