This question was also asked in Miami. Let me assure you, rigor applies to all students at all grade levels and subject areas. Rigor is creating an environment in which each student is expected to learn at high levels, each student is supported so he or she can learn at high levels, and each student demonstrates learning at high levels.
Let's look at a couple of great rigorous activities for the primary grades. First, when teaching concepts, such as colors, numbers, or shapes, ask them to describe them using riddles. Students love to use puzzles and riddles to try to stump their classmates, and they are very creative!
I'm the shape of Mrs. Juarez's desk. What am I?
I'm what you use when your pencil won't write. What am I?
I'm the animal that was chased in the story. Who am I?
Second, rather than showing students a picture or the cover of a book and asking them to describe what they see, put the picture/book inside a folder. Make sure the folder has eyes and a smile cut out. Ask students to guess what the picture/cover is by only looking at pieces, rather than the whole. You can also do this by putting together puzzle pieces.
Both of these activities are simple, yet require students to think at higher levels of learning. Remember, rigor can be fun!!!!