Dear Parents,
We are currently in Unit 3, Use Addition and Subtraction. This
unit "provides experience with various representations and contexts for
addition and subtraction, while continuing to develop and practice
computation methods that are meaningful and easily used by students."
Please visit the following link to check out your student's unit:
http://eduplace.com/parents/mthexp/g3/overview/pdf/uo_g3_u3.pdf
See Unit 3.
I hope this information will be of use to you. Please let me know if I
can be of any further help to you.