Addition with Regrouping Using Sticky Notes

Hi there!  It's Hannah from The Classroom Key.  All second grade teachers know that addition and subtraction with regrouping are mainstays of 2nd grade math curriculum.  Today I'm sharing a strategy for modeling addition with regrouping using sticky notes.

If your students have already explored addition with regrouping using manipulatives, they may be ready to think about ways to record regrouping on paper.  This is one of my favorite ways to get them started.

Start with a problem like this that requires regrouping in the ones' place:

Add up the ones and write it the total on a sticky note.  Here I've also indicated which is the ones' place and which is the tens' place with words.

Next, cut the sticky note in half to separate the tens and the ones.  

Put the ones piece underneath the equation in the ones' place.  Carry the tens piece over to the tens' column.  This keeps kids from getting confused about which number get carried and helps preserve some of the meaning behind the algorithm.  Add all the tens together and the problem is solved!

I start by demonstrating this on the board a few times, then letting kids come up and demonstrate it, and finally letting kids try it at their seats.  Give it a try!

Happy teaching!

Hannah

The sticky note man in the first graphic comes from Sarah Pecorino Illustrations.

Math Magician with Francheryl

I'm so excited to be part of this collaborative blog!  I'm Francheryl from Primary Essentials.  I have been working in education for 16 years.  I taught second grade for 9 years.  Second grade is my one true love as far as grade levels are concerned!  I was an Instructional Coach for Pre K-2 for ELA and Social Studies for 5 years.  I'm currently teaching intervention students in grades K-5 for reading and math.

I'm dropping in today to share a website that I use to help my students with mastering math facts.  Math Magician is a website that gives students an opportunity to practice addition and subtraction facts.  There's even multiplication and division if you have students that are ready for those skills.  It's a techy alternative to the drill and kill timed facts worksheets.

The website is completely FREE!  Which is another plus. 

It is very easy to differentiate for your class.  I currently use this website with several of my intervention groups.  It is set up by facts from 0 to 9 and two levels of mixed facts. 

To use the website, students type in their name and click on the level they need to practice.  (No need to worry...no information is saved, however, students could use their class number or type nothing if you are worried about cyber safety.)  Once they click start, they have 60 seconds to complete 20 math facts for the level they chose.

If they answer all 20 questions, the students will get to see their grade. 



The students love seeing their grade immediately, and you do not have to grade all those timed worksheets!  Another bonus, is that students can use the website at home to practice.  Quick, easy, and painless...just how I love my technology!

That's all I got for now...see ya' around the blogging world!