HOW WE BUILT AN ABACUS

 

 

Step 1.  We cut a grey piece of clay into two halves:

Step 2.  We cut each of the two parts into two, so we got the base of the abacus:

Step 3.  We put two long sticks (one for TENS, one for UNITS) into the base:

Step 4.  We let the abacus dry up:

Step 5.  We marked the stick on the left with a red dot (tens) and the stick on the right with a blue dot (units):

Step 6.  We cut as many straws as possible into pieces of the same lenght:

 

AND NOW ENJOY YOUR MATHS!!

 

;)    ;)    ;)    ;)    ;)    ;)    ;)    ;)    ;)