Blizzard of The Blue Moon by Mary Pope Osborne was a fun, entertaining book that I would recommend to elementary school kids, because it's a lower reading level. It all begins when Jack and Annie go in there tree house that goes to wherever they want. They had to go to New York City to rescue a unicorn. The tree house landed at Central Park, and there was a BIG blizzard. They got on the subway so they could get closer. A lady told them the wrong stop that was really far away from where they needed to go so they took a taxi to try to get closer. The taxi ended up getting snowed in, so they just got out and walked. Jack and Annie had block's and block's to go.
As Jack and Annie are walking there far distance, thinking they needed to go to the zoo, they decided to hit the museum to warm up. This nice museum lady said she was very excited, since she hadn't had any costumers all day. She suggested they stay a while, since there was going to be a huge blizzard. She wanted to inform them on some older facts, that probably nobody knew nothing about. She talked for a long time, about boring things, that practically put them to sleep. Jack finally stooped her with an interruption, and said "we need to get some work done." So she showed them the way to the back of museum, and said "why don't you take a look there, because you'll enjoy it." Jack and Annie had no idea why there were going there, but maybe there could be the unicorn that they need to capture. So they went right along, through a double set of doors, to the outside, and back into a different building. Right when they enter, and to the left there was a HUGE picture of an unicorn that would capture your eyes in a second. From that moment on, they knew that was the right unicorn. Jack got into his backpack a read a poem form the book. All of a sudden, the unicorn came to life. Oh no. Just now two people showed up who were also trying to get the unicorn. Now were going to have to fight for him.
Make sure you read this book and find out what happens. I would recommend it to you any day.