Lots of winter activities This one would be cute with a little bucket or something next to it for students to write guesses on and than check at the end of the week or to keep written in their math journal
Arctic play, sorry not sure who to thank for this idea. Fill the big tray with blue tinted water, sit a bowl or tub in the middle, weighted down if need be. Place outside or in freezer (whichever is colder). Add your animals and water in the middle, add some ice cubes to float about in the middle.