3 years & up. Introduce conservation practices to your children with this descriptive Recycling Zone Learn What Materials Can Be Recycled. This poster promotes environmental awareness, community, and earth conscientiousness. Children will learn what common materials from their home can be recycled. For an after lesson game, divide your class into four teams, and have them discuss what should be recycled. Afterwards, have them place the tiles under the correct zone. Includes one large board and 20 tiles.