Learning Resources Coding Charms. Young coders can get creative with Coding Charms, the Science, Technology, Engineering, Art, and Maths (STEAM) craft kit that helps children learn about algorithms, sequencing, binary and variables as they make 10 adorable key chain projects. Set contains a 44-page Activity Book plus all the supplies needed to complete 10 projects, in a convenient storage box. Box measures 5cm H x 20cm W x 25cm L. Ages 8+. Warning: SMALL PARTS Not for children under (three) 3 years.