Thank you for posting this video, it helps.
Thanks Mdm Pavi!
Thanks for posting up the video!
This video teaches me lots of things about expnsion and contraction. thanks mdm pavi!
Thanks Mdm Pavithra!
Dear Mdm Pavithra,The video is interesting and it helps me to know more about expansion and contraction of matter!Thank you for posting it up!
Dear Mdm Pavithra,thank you for posting this video up.I had learnt even more of expansion and contraction.
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Thanks Mdm Pavi