Digital decomposition and synthesis teaching aid $ 31.61 Product Name: Digital Separating and Combining Teaching Aids Appropriate age: 3-8 years old Material: ABS, paper Specification: 18.518.5 5.2CM Packing: color box Applicable age: children (4-6 years old) Style: A. Digital teaching aids (51 question cards free), B. Digital Separating and Combining Teaching Aids (Free 51 Question Cards) + Workbook
