One thing I like is when the Ice Wizard says "Bring me my eyeball," then Jack and Annie go on a mission to bring the wizard's eye. Do they come back with the eye in the hailstone... find out in the book!
Another good thing was the plot because at the end of the story Jack and Annie come with the eyeball but the Ice Wizard does not accept the eyeball. but in the nick of time, Teddy and Kathleen brought the "Swan Maiden." The "Swan Maiden" makes the Ice Wizard happy because the "Swan Maiden" was his sister! He hasn't seen her in years! So he releases Morgan and Merlin, that he trapped!
The best part is when Jack tied a string a whole ship moved! Why? I felt excited for Jack and Teddy that they made a whole ship. then they could go to the Norn's house, faster!
If you have read Magic Tree House 1-31 then trust me when I say you should read Winter of the Ice Wizard. I think you should read it because lots of children also like the book. I can be for ages 1st-3rd grade. I give it 5 out of 5 stars!