Learning Outcomes :
· To measure volumes of liquid using non-standard units.
Materials:
· 18 glasses which contain of 3 different sizes.
· 3 larger glass container of the same size.
Procedures：
1． Divide the class into groups of four students and have them work in their cooperative groups.
2． Appoint one student in the group to be the recorder.
3． Give each group a set of glasses of different sizes and 3 large glass container of the same size.
 |
| 1 set of glasses |
3 same glass container
4. Student are ask to fill all the glasses with water, then arrange it as below. ( picture below )
5． Student A will be in charge of container A, student B will be in charge of container B and student C will be in charge of container C.
6． Each Student will pour the water from the glass into the container one by one until the container is full of water. Repeat for the other containers. Do it as below:
Container A:
Container A:
Container B
Container C
7． Have the students record their findings in the following table：
Glasses | Estimation | Measurement |
 | 6 glasses | |
 | 6 glasses | |
 | 4 ½ glasses |
9. Have the students write their findings in the statement below:
The volume of water in the Glass container is the same as the capacity of ____ glass A.
The volume of water in the Glass container is the same as the capacity of ____ glass B.
The volume of water in the Glass container is the same as the capacity of ____ glass C.
10. Have the students discussed on the three types of glasses ( Glass A, Glass B and Glass C ).
Answer: Glass C has the biggest capacity and Glass A and B has the same capacity.
