Raghu's bottle is filled with four glasses of water. A. How many glasses of water can fill your bottle? B. How many glasses of water can fill your friend's bottle? C. Does your friend's bottle fill with equal/more/less amount of water?
Count the number of glasses needed to fill your bottle completely.
Count the number of glasses needed to fill your friend's bottle completely.
Compare the counts: if equal glasses, equal water; if more glasses, more water; if fewer glasses, less water.
Explanation
(A) Students pour water from a glass into their bottle and count until full. (B) Students use the same glass to fill their friend's bottle and count. (C) Students compare the number of glasses counted for each bottle to determine which holds more, less, or equal water.