Addition and Subtraction (w/wo Regrouping)

Guided Math Lesson

When I taught 2nd grade before, I absolutely loathed teaching addition and subtraction with regrouping, and to be honest... I didn't do good job of it either! However, after teaching 3rd grade for seven years, I saw just how important that foundation was for students. So when I found I was going back to 2nd grade I knew I had to get it right this time.

Guided Math Kit

In October I had the honor of attending a Guided Math Conference (http://jessicaywinston.blogspot.com/2018/10/guided-math.html) and it changed my life!  Included in the registration was the Guided Math Grade 2 Unit 4 Kit. Fast forward to February and I'm finally starting to plan for my regrouping unit when I remembered the kit, I hadn't even opened it yet... and when I did, it was magical! (see video from website below)

It included...

• Teacher Guide w/19 Lessons (I only needed to teach 1-15 to cover my state standards)
• Warm Up Poster
• Card Sets (write and wipe)
• Storage Tote

I had everything I needed to thoroughly teach this concept!
The strategies included were...
Mental Math- Add the Tens

Mental Math- Add/Subtract the Tens (blocks)

Mental Math- Adding on a 120 Chart

Regrouping Blocks- Build It Trade It

Column Regrouping

Regrouping Blocks- Trade Down to Subtract

Number Line Addition and Subtraction

My students have done an amazing job and based on formative and summative assessments, they truly understand the concept. Below are links to the materials I used during this unit:

• Guided Math Grade 2 Unit 4 Kit $79 (worth the $$)
• Guided Math Grade 2 Unit 4 Digital Version $16.50 (you would need to print and laminate the card sets yourself)
• Second Grade Math Addition and Subtraction Up to 100 $15 (I used the center ideas and reproducibles for independent practice)

One purchase I will be making this summer is the Guided Math Grade 2 Unit 3 Kit. We spend an extensive amount of time covering basic addition and subtraction strategies at the beginning of the year and I can see how this kit would be very beneficial. 

Mastering Math Facts

Students setting up their math fact fluency folders.

One strategy I couldn't wait to implement this year was Math Fact Fluency Folders. After the 1st quarter and all addition and subtraction strategies had been introduced, I decided it was time for students to master basic facts. Students took a math period and cut out all the addition flash cards and put their number on the back of each card (so that if lost and then found, we knew who it belonged to).

Twice a week during the Math Facts Rotation, students take 8 flash cards from the "new facts" and practice them for 7 minutes (then place them in the "math facts I'm practicing"), then spend the other 7 minutes working with math facts games and activities. When they are ready to be tested on those 8 facts, they bring them to the table during their Teacher Table Rotation. I hold up the card, if they get it correct, I initial the back and we move them to the "math facts I know" pocket. If they get it incorrect, it goes back into the "math facts I'm practicing". Always keeping 8 facts in that pocket.

My niece was so proud when she mastered her addition facts!

Once students have mastered all their addition facts, they get to work on their subtraction facts. I placed all the mastered addition facts in a ziploc back for them to take home and give them two SMART Tags, Hard Worker and Marvelous Mathematician. This system has worked out great and I've already had a handful of students finish their addition and now they are working on their subtraction. The folders came from The Primary Gal on TpT, files are linked below!

Addition Math Fact Fluency Folders

Subtraction Math Fact Fluency Folders

Multiplication Math Fact Fluency Folders

Division Math Fact Fluency Folders

Giant Place Value

Giant Place Value Manipulatives

Base 10 Pieces

 Many of you know that it's my first year back in 2nd grade after being in 3rd for the last seven years. In an effort to find fresh ideas I took to Pinterest when I found this! I couldn't wait to get started. I took some Astrobrights Cardstock (9.5x11) and trimmed the long edge to 10 inches. Then cut that in half so that I had two 4.25 inch pieces. Then cut that in half so that I had four 5 inch by 4.25 inch pieces. 
I ended up using 6 sheets of cardstock per color (pink, blue, green, yellow purple). That made ten Base 10 Rods and twenty Base 10 Units. 

I taped 5 together at a time. Then took two halves and taped them together to create the rod. I used a black marker to create the sections of the rod, added a smilie face and found some eyeballs in my clip art, but then found a sheet of them in this Frankenstein Craftivity I had purchased. I'm going to be honest, the eyeballs were a pain to cut out so you could just draw some or not put faces on them at all.  

I'm going to use them in my whole group lessons during my Guided Math Place Value Unit. The kids are going to work together to create numbers while the other kids identify them. I can also see using them when we start regrouping with addition and subtraction. 

Guided Math

Me, Reagan Tunstall and my BFF Adrienne

On October 1st I had the opportunity to attend Reagan Tunstall's Guided Math Game Plan Conference with my best friend. It was simply amazing! I always considered myself a reading person, my strength, I felt, was teaching reading. Well after attending this conference I now feel like I'm a pretty good math teacher as well!
If you can't make it to one of her conferences she has a step by step guide on Teachers Pay Teachers on How To Launch Guided Math. I highly recommend downloading it and reading through it if you are at all interested in guided math. 
I wanted to share my plan on how I plan to implement guided math with my 2nd graders. 
Based on Reagan Tunstall's recommendations my 70 minute math block should be broken up like this: Warm Up- 7 minutes Whole Group- 18 minutes Small Group- 38 minutes Reflection- 7 minutes I chose to break of my block like this: Warm Up- 10 minutes Spiral Review- 10 minutes Whole Group Mini Lesson- 10 minutes Small Group- Two 12 minute groups Review Journal- 5 minutes Reflection- 10 minutes Here's what each component looks like in my classroom and links to the resources I'm using:
Warm Up- I decided to use Reagan Tunstall's Math Warm Ups for 2nd Grade. The students really enjoy them and it keeps them engaged. 

This was our Workout Wednesday Warm Up

Spiral Review- Back in May I blogged about implementing Daily Math Review in my 2nd grade classroom. I could have done away with it in lieu of the math warm ups but I have already created the booklets and my students love working in them daily. 

Whole Group Mini Lesson- I've been using lessons from The Moffatt Girls during my whole group lessons. Since it is a growing bundle every concept is available yet. I've been supplementing with resources from Amy Lemons and Reagan Tunstall. 

Journal Entry- After whole group and before math rotations begin, students have to complete a journal entry. I'm using handouts from The Moffatt Girls Math Made Fun bundle and shrinking them to 85% for students to glue and complete in their composition journals. Students can not begin their first rotation until their journal entry is completed. 
Rotations- I have 5 math groups that do 2 rotations a day, which means each group will visit each MATHS rotation twice a week. 
Math Facts- students practice their basic math facts at this rotation, it includes flash cards and centers on basic facts (the centers are from the Moffatt Girls Bundle)

Math Facts Activity

At Your Seat- students complete a math menu at this rotation, I use menus from Teacher's Clubhouse and Choose and Do Math Grids
Teacher Table- this is my small group rotation and where the bulk of my teaching happens, I use a variety of engaging activities to instruct students while they're in a small group with me, most of the lessons come from the Moffatt Girls Bundle

Odd/Even Small Group Activity

Hands On- students at this station work with math manipulatives and math mats, I also keep Flip and Solve Booklets at this station for students to work on as well 

Hands on Activity with Color Cubes and Math Mats

Stations- students at this station work with math puzzles and centers from the Moffatt Girls Bundle (as you can see I'm getting my money's worth with that bundle!)

Odd/Even Numbers Station

Review- After our two 12 minute rotations I briefly go over the journal entry while students check their work. 
Reflection- We do this to wrap up Math Workshop. I use the Reflection Cards from Reagan Tunstall, students share in partners or with their tables. These can be used in any subject area, not just math. 

Table Reflections

We've been going strong in guided math for about 3 weeks now and I love it! My students are really mastering the math concepts and it shows in their assessment scores.