格敦企業股份有限公司
請輸入包含最少兩個字母或數字的關鍵字。
Wooden Red–White Rekenrek (2-Bar, 20 Beads)
Includes: Abacus ×1
Structure: 2 rows × 10 beads (each row 5 red + 5 white), 20 beads total
Design: Color grouping supports 5/10 number sense and quick subitizing
Materials: Wooden frame with metal rods; smooth, rounded beads
Skills: Counting to 20, addition/subtraction, number bonds to 5 & 10, doubles/near-doubles, skip counting by 5s
Use Cases: Home learning, preschool/early elementary classroom, math center
Age: 3+ (adult supervision recommended)