Category Archives: math

Addition and Subtraction

We are moving right along in math!  I wanted to update you on what we have been working on and where we are going next.  As I tell the kids, we are starting off with smaller number to get a thorough understanding of strategies and concepts and then we will move our way into higher numbers.  In our addition and subtraction to 10 unit, we worked on counting up and counting back to solve addition and subtraction problems.  We also worked on quick recall of facts.  I would like them to be able to quickly find the answers to these problems without having to use their fingers.  Story problems are another skill we focused on.  We practiced solving many problems using a variety of strategies including drawing pictures, using a number line, and writing number sentences.  These strategies are building the foundation for them to solve more difficult word problems.  Finding missing addends in both subtraction and addition sentences were also covered in these units.  Some examples of these problems are 2+___=10, ____-5=4, or _____-6=4.  Another tricky skill that we covered was balancing equations- 8-4= 10- ____.  Yes- like algebra!  It is amazing the things that these kiddos can do!

We are currently working in a geometry unit.  We will cover 2D shapes, 3D shapes, and fractions!

MATH MEMO

WOW! We have gotten off to a great start in math this year! We have covered a lot of concepts and the kids have really worked hard!!! I have loved getting to know Ms. Rowe’s friends and can’t wait to see how much they learn this year.

After assessing the class at the beginning of the year, we skipped chapter one in our math series. It covered many different skills focusing on numbers 1-10. Your child should be able to read and write number words to ten. They should also be able to compare numbers and objects using the words more, fewer, or the same as. They should be able to complete number patterns- counting backwards, skipping numbers, and figuring out missing numbers in a pattern. Finally, they should be able to name a number that is one more or one less than a given number.

We just finished our unit on number bonds. This might be a new concept for you, but you would be amazed at the critical thinking skills that your kiddos have developed in this unit. Number bonds are basically a way for students to break numbers into parts. They have explored all the “ways to make” numbers through ten. This skill of part/part/whole will help students as we move onto addition and subtraction. This is what a number bond looks like-Number BondHere are some pictures of us hard at work during math workstations!

Measuring Length

We are currently working on measuring length in math.  We measured our heights and ordered our math class from shortest to tallest.  Here we are…

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We have measured with candy, links, grid paper, and string!  We will continue working on measuring length for the next two days.

Fact Families

We are continuing our work with subtraction, but we are also studying fact families.  I know some of you are thinking, “What’s a fact family?”  A fact family is a group of related facts.  For example: 3+4=7, 4+3=7, 7-3=4 and 7-4=3.  At one of our math workstations this week, your child will be using fact triangles.

These are a great tool to work on addition and subtraction facts.  Each triangle has the three numbers used in a fact family on it.  You can use these triangles to practice addition and subtraction facts.  Fact triangles are great because they reinforce the strong link between addition and subtraction.  They also help them memorize facts faster because they link four facts together.  I challenged the kids to start practicing these in the car or during T.V. commercials!

Subtraction

We are currently working on subtraction.  Over the past few days, I have been modeling different strategies for solving subtraction problems.  We started with the take-away strategy, and then we moved on to counting up and back.  These strategies work as follows:

6-3=3

  • Take-away: Put up 6 fingers, put  down, count how many are left
  • Counting Up: Start at 3, count up to 6
  • Counting Back: Start at 6, count back to 3

All these strategies are helpful in solving subtraction.  We will continue working on this and begin working on story problems with subtraction this week.

Addition to Ten

We started our chapter on addition to ten in math class last Thursday.  Addition helps form the foundation of arithmetic and is an essential part of the computation work in elementary school.  One of the basic strategies of addition is counting on, which leads students to understand the connection between counting and addition.  The students are doing really well so far! Practicing is important because we want their addition facts to become automatic which will help them with more difficult math in the future.

Ms. Sullivan

NUMBER BONDS?!?

  We started our new chapter in math today.  I know when your kids tell you that we worked on number bonds- you might say WHAT?!?!  I know I didn’t know what a number bond was until a couple years ago 🙂  Number bonds are an important foundation for addition.  When they understand the concept of number bonds, it will be easier to do addition and subtraction with regrouping later in the year.  It also helps them sharpen their mental math skills.  Have your child do some examples on their number bond that they will be bringing home tomorrow.