DD6.0 is finishing 1st grade math, and dabbling in 3rd and 4th grade math. In thinking about what to work on over the summer, I'm puzzled -- where's the 2nd grade math? It seems like a dead zone. Okay, borrowing and carrying, she needs work on that. And decimals, haven't done that. But does she really need to practice calculating how many ounces in a hectare or whatever?

Maybe the 2nd grade curriculum is just marking time until kids are developmentally ready for multiplication? It just seems to have less conceptual content than what comes before or after it. Or do they really need a whole year of this?
Originally Posted by Wikipedia
In mathematics, students are taught place value to hundreds or thousands, and renaming with addition and subtraction. Measurement is extended to the meter, foot, yard, kilogram, pound, and pint. Measurement of time and temperature in Fahrenheit and Celsius is also emphasized as well. Usually multiplication and division is introduced towards the end of the school year but not emphasized. Positive and negative numbers are introduced, but not added and subtracted. These values are generally introduced in temperature. Addition and subtraction facts are practiced throughout the year. Students also learn about plane and solid shapes in geometry and explore how they are apparent in our everyday lives.