TheRE-Wood® stacking numbers are available in natural colours or in 10 different Montessori colours. Each stacking number is as high as its value, i.e. the 1 is exactly 1cm high, the 10 accordingly 10cm high. All numbers are 4cm wide and 3cm deep. This way you let the children discover the world of numbers in a playful way! Promoted competences - Numbers and arithmetic - Space and form - Size and measurement Through playful handling of the stacked numbers, the competences are deepened and extended - Getting to know numbers 1 - 10 in correct number representation - Learning to write by tracing the stacked numbers - Recognising number and their value, the larger the stacked number, the greater the value.Comparing stacked number towers without counting same height = same value - Decomposing stacked number towers into number series - Grasping and understanding basic arithmetic operations with all the senses, e.g. 5+5=10, 5+5=10, 5+10=10, 5+5=10.e.g. 5+5=10, 12-3=9, 3x3=9, 12:6=2 - calculating with stack numbers - self-control "Help me to do it myself" according to Maria Montessori.