volume and capacity in milliliters and liters.

For the past week we have been learning about volume and capacity in milliliters and litres. Today we were split into  three's or four's and we had to estimate with solids. My  group went up to the sandpit to make a litre out of sand. After we collected the solids we tested them with the teacher. We put the solids into a litre container. Some people got more than a letre and some got less than a litres.