You may have heard about the Texas Bluebonnet list; for, many schools in the Houston area include these books as part of their curriculum. On the other hand, library costumers are confused about the 2x2 booklist. I hope to clear up any questions you may have in this post. If you have any additional questions, feel free to write a comment, and I'll be happy to answer it for you.
"The 2X2 Reading List is a project of the Children’s Round Table, a unit of the Texas Library Association. The 2X2 Committee‘s charge is to produce a list of 20 recommended books for children, age two to grade two." 
Below is a list of the current 2x2 books and their links. The Children's Round Table Committee always has a wonderful selection of picture books to choose from. Enjoy!
Nat the Cat's Sunny Smile . Jez Alborough.
This is the tale of a smile gone astray and how it comes back to save the day.
Count the Monkeys. Mac Barnett.
It's time to count the monkeys! It's fun and easy, so let's turn the page and get started.
Night Light.  Nicholas Blechman.
What vehicle is behind the die-cut circles? Count the circles, turn the page and see!
I Dare You Not to Yawn . Helene Boudreau.
A little boy shares his advice in this cautionary tale about sneaky yawns and their consequences.
How to Train a Train.  Jason Carter Eaton.
So, you don’t want a dog or cat, but what you really want is a pet train? This guidebook shares all the information you will need to prepare for your mechanical friend.
Fraidyzoo. Thyra Heder.
Little T is afraid of going to the zoo, so her family imaginatively creates all the scary animals she may see. She’s soon ready for the trip, but then her family encounters a creature more frightening than any zoo animal.
Little Red Hot Eric A. Kimmel
Once upon a time there was a Texas gal named Little Red Hot who loved to eat chili peppers for breakfast, lunch, and dinner. Her favorite spicy treat is hot pepper pie; delicious and just the answer for getting rid of the cold germs that have her grandmother feeling under the weather.
The Black Rabbit . Philippa Leathers
Rabbit tries to run and hide, but the black rabbit is always there. Why won't he go away?
20 Big Trucks In The Middle of the Street. Mark Lee
An ice cream truck breaks down in the middle of the street and a traffic jam of epic proportions ensues. A mail truck, a crane truck and more fill the street. How will all of the trucks make their deliveries on time?
Tap the Magic Tree.  Christie Matheson
Touch and tap the magic tree and go through the four seasons in this highly interactive book.
Bug Patrol.  Denise Dowling Mortensen.
There are problems in Bug City, and Bug Patrol is coming to the rescue.
Little Mouse.  Allison Murray
Mommy says I’m her little mouse, but I can be so many other animals as well. Let me show you how.
The Watermelon Seed.  Greg Pizzoli.
Crocodile accidentally swallows a watermelon seed! Will a watermelon grow in his stomach?
Super Hair-O and the Barber of Doom. John Rocco.
All superheroes get their powers from somewhere. The more Super Hair-O's hair grows the more awesome his superpowers become, until he is taken to the villain's lair, and his superpowers are at risk of disappearing.
Nugget & Fang: Friends Forever - or Snack Time? Tammi Sauer.
In the deep, deep ocean lived two best friends. Nugget and Fang did everything together, and life was perfect until Nugget went to school and learned that sharks and fish can't be friends.
Turkey Tot. George Shannon.
Turkey Tot wants blackberries but they’re out of reach. What inventive idea will he come up with to get the berries, despite his nay-saying friends?
Patch.  David Slonim.
Patch is a good dog, most of the time. No matter what he does, however, he's always loveable.
Round is a Tortilla: A Book of Shapes.  Roseanne Greenfield Thong.
Our world is full of shapes. Find circles, squares, rectangles and other shapes in this book and then look in your own neighborhood.
Digger Dozer Dumper.  Hope Vestergaard.
Big trucks have big fun doing their jobs, but all have different personalities. Which truck would you like to be?
My Blue Is Happy.  Jessica Young.
My friend says pink is pretty like a ballerina’s tutu, but I think pink is annoyiny, like an itchy bug bite. What colors make you happy?