蒙氏數學啟蒙0-20數學分解教具幼升小教具 Montessonis Enlightenment 0-20 Mathematical Decomposition Teaching AIDS for Primary School Wooden Toy
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蒙氏數學啟蒙0-20數學分解教具幼升小教具
加數和減數訓練、認識1-20的排序
20以內數字的分解和組成,為加數和減數做準備
Singapore Number Bond Tray Montessonis Enlightenment 0-20 Mathematical Decomposition Teaching AIDS for Primary School Wooden Toy
Addition and subtraction training, understanding the sorting of numbers 1-20
Decomposition and composition of numbers within 20, preparing for addition and subtraction.