https://padlet.com/hwange3267/ysesmzt4te7y en-us 2017-05-19 18:50:00 UTC 2017-05-25 20:29:06 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Lovecookie.png hwange3267 https://padlet.com/hwange3267/ysesmzt4te7y/wish/173245370 The mohs hardness scale tells you how strong a rock or mineral is. In this picture below it shows you how strong these rocks are. ]]> 2017-05-22 20:28:51 UTC https://padlet.com/hwange3267/ysesmzt4te7y/wish/173245370 hwange3267 https://padlet.com/hwange3267/ysesmzt4te7y/wish/173900591 2017-05-25 20:27:42 UTC https://padlet.com/hwange3267/ysesmzt4te7y/wish/173900591