Grade 2 and the CCSS
Learn more about Investigations and the Common Core State Standards at second grade. The sample Session, How Many Hundreds?, is one of several Sessions that focus on the place value of three-digit numbers and on adding or subtracting 10 or 100 to/from a given number. It is designed to be incorporated at the end of the sixth Grade 2 unit, How Many Tens? How Many Ones?: Addition, Subtraction, and the Number System 3. The instructional plans layout Session-by-Session changes to each Investigation in that unit.