This page may not display or work properly on smartphones and tablets
The Educated Monkey
Set the feets on the numbers to multiply and the result magically appears between the "hands". Of course it also performs divisions: dividend fits between the "hands", divisor fits at right or left feet and the result is read at the other feet. As showed in the example below there is also a square function, but in any case you can"t enter any number bigger than 12.
Can also be inserted a card that allows to add and subtract: in this way the children can easily understand the relationship between addition and multiplication, It' a true programmable calculator! Still in commerce and is used in many schools.
Nicola Marras 2008
Credits: Reinhard Atzbach
If you see this page without the sidebar you come from