Sold as 72/Set. Subject: Early Education. Size: 1', 2', 3' and 4' worms. Squishy, colorful worms that make counting, sorting and measuring fun. Age group and grade: Ages 5 - 18 and grades kindergarten - 12th. Includes set of 72 worms comes in six colors and four sizes packaged in a reusable storage bucket and also includes activity guide. Also includes activity guide packed in a convenient storage bucket. Usage ideas: Students get a grasp on early math skills with these squishy, colorful worms that make counting, sorting and measuring fun. Includes worms in six colors and four sizes (1', 2', 3' and 4'). Topic: Counting, sorting and measuring. Students get a grasp on early math skills.