Shelby and Shauna Kitt and the Dimensional Holes By P.H.C. Marchesi Published 2011

Summary
Who would want to have tea with mushrooms, when it's a hundred degrees and humid out? As Shelby and Shauna Kitt find out, quite a few people. These are, of course, people from Miriax, a planet in a different dimension where nothing and no one is anything like what the thirteen year-old brother and sister twins expect. On Miriax, lilac tea is served with explosive mushrooms, agitex leaves cure motion sickness, stick insects patrol the jungle, and library books carefully choose their readers, refusing to leave the shelf for anyone else. And, if you're not careful, the walls spit on you.
Shelby and Shauna's lives change drastically when planet Miriax recruits them to seal a dimensional hole that allows Klodians - nasty aliens - to travel to Earth. In order to succeed in their mission, Shelby and Shauna discover skills they never thought they possessed, make friends they never expected to have, and face enemies they never imagined existed. Shelby and Shauna Kitt and the Dimensional Holes won "Best First Chapter Book" in the 2012 Children's Literary Classics Awards, together with a gold award in the "fantasy pre-teen" and "science-fiction pre-teen" categories. The novel was also an award-winning finalist in the young adult and science-fiction categories of the 2012 International Book Awards.

Activities
I would encourage my students to read this book while we are doing a unit on space. After reading this story students would create  their own fictional planet.. They would have to describe what the planet looked like, what the inhabitants looked like, and what do they do on their planet. After drawing a picture the students would present their planet to the class. Another assignment that I would have my students do is after they create their planet, they would need to create a promotional poster for it. The poster would need to include the name of the planet and why you should come vacation there.