How much salt dissolve in water

Students of class II investigated “How much salt can dissolve in different quantity of water”. Three glasses of same size were taken and different quantity of water was poured in the glasses and salt was slowly dissolved in the different glasses .The salt was poured and mixed till no more salt could dissolve in water. The investigation was made a fair test by using same shape and size of glass. It was observed that glass with less water dissolved less amount of salt and the glass with more water dissolved more salt.