https://padlet.com/tan_yueh_zhen_clara/76cpd02wql2b What do you see? What do you think? What do you wonder? en-us 2017-06-22 00:21:49 UTC 2017-10-22 23:44:39 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/80264060/cdf38ae2d21ee13c036196e76c1eb262/Backback.png tan_yueh_zhen_clara https://padlet.com/tan_yueh_zhen_clara/76cpd02wql2b/wish/177697498 I saw a shadow. I think that shadows are formed when there is a light source. I wonder how shadows are formed.]]> 2017-06-29 01:05:16 UTC https://padlet.com/tan_yueh_zhen_clara/76cpd02wql2b/wish/177697498 https://padlet.com/tan_yueh_zhen_clara/76cpd02wql2b/wish/199409035 2017-10-22 23:44:39 UTC https://padlet.com/tan_yueh_zhen_clara/76cpd02wql2b/wish/199409035