I was wondering if anyone could shed any light on the reasoning that TERC might have for not developing a probability unit for grades 3 & 4. We were looking at the fifth grade unit the other day and suddenly realized that nothing in the preceding two grades really leads up to this work as a formalized unit. Am I perhaps overlooking the probability work in another 3rd or 4th grade unit?
Thanks in advance for any insight you may be able to provide.
