This has been a wonderful week back with second grade! I am so excited to be back in the swing of things with the students.
This week we explored rounding two and three digit numbers to the nearest ten. We began by determining that half of ten is five and used this understanding to find the "middle man" - or number that is half way between the tens - on a number line (ex: the "middle man" between 30 and 40 is 35). Next, we established that numbers that are less than the "middle man" would round down and numbers equal to or greater than the "middle man" would round up. We then practiced establishing the two tens a number came between, determined the "middle man", compared the number to the "middle man" and identified what ten the number rounded to. We wrapped up our lesson with a spirited game of "Round Away."
Great job rounding second graders! I've attached the template for "Round Away" below so you can play at home!
This week we explored rounding two and three digit numbers to the nearest ten. We began by determining that half of ten is five and used this understanding to find the "middle man" - or number that is half way between the tens - on a number line (ex: the "middle man" between 30 and 40 is 35). Next, we established that numbers that are less than the "middle man" would round down and numbers equal to or greater than the "middle man" would round up. We then practiced establishing the two tens a number came between, determined the "middle man", compared the number to the "middle man" and identified what ten the number rounded to. We wrapped up our lesson with a spirited game of "Round Away."
Great job rounding second graders! I've attached the template for "Round Away" below so you can play at home!
![](http://www.weebly.com/weebly/images/file_icons/rtf.png)
round_away.doc |