Based on the Common Core State Standards (CCSS), standards are stated in student friendly terms ("I can" statements) where the students are able to track their own mastery of each ELA and Math standard. The numbers are based on Marzano's Proficiency Scales where 3 is considered mastery and a 4 is the application or inference of the standard.
Students are able to track their own learning of each standard in their own data notebooks with these blocks. They color in the number for their sense of mastery (2: I can do the simple tasks, but not the harder ones. 3: I can do it, independently. 4: I can teach, apply, or make inferences with it). Students are able to track each standard/substandard and they are able to see their own progression through the standards.
2nd Grade Standards are available here:
Clipart images available at http://www.teacherspayteachers.com/Store/Zip-a-dee-doo-dah-Designs