**Math Update**

Please click here for information on the common core standards,

key vocabulary, and helpful web sites.

Please click here for information on the common core standards,

key vocabulary, and helpful web sites.

https://docs.google.com/document/d/16LJsHPlQwQUd5NRDmL71zvWKTP1iyUOgHU5jLeqK7Kc/edit

**Update**

Students have been busy representing numbers in multiple ways! We have been building numbers with base ten blocks, and drawing numbers using a key for hundreds, tens, and ones. Students are learning how to show numbers in standard form (425), expanded form ( 400+20+5), and word form (four hundred twenty five). We also spent time reviewing even and odd numbers at the start of our year.

**Our current content standards for our first unit:**

*Count within 1000 (skip count by 5's, 10's, and 100's)

*Understand hundreds, tens, and ones in three digit numbers

*Represent numbers with number names and in expanded form

*Determine whether a group of objects is odd or even

*Mentally add 10 or 100 to numbers between 100 and 900

I recently sent home a helpful tip sheet that communicates our focus for the first trimester. You will see the standards listed, key vocabulary we are using in the classroom, as well as some online resources

__Major Clusters for Second Grade__

*Represent and solve problems involving addition and subtraction.

*Add and subtract within 20.

*Understand place value

*Use place value understanding and properties of operations to add and subtract.

*Measure and estimate lengths in standard units.

*Relate addition and subtraction to length.

Another great resource is the website www.learnzillion.com You can type in a topic to view information and videos related to that topic.

In Math, we have worked on adding and subtracting to solve one step story problems using our learned place value strategies. Students were applying the strategies of decomposing, partial sums, and an open number line. Then we moved into solving two step story problems. Students have been busy using a model called a "tape diagram" to help solve these types of word problems. This model helps to organize our thinking when solving these types of problems. We will also be working on telling time to the nearest 5 minutes, using a.m. and p.m

**Thank you for reviewing our measurement assessments and returning them to school. We have begun our next unit, which focuses on two digit addition and subtraction. Students have been using the decomposing strategy with 2 digit addition (this strategy involves breaking the numbers into expanded form, then adding).**

Example:

46 40 + 6

+

__23 20 + 3__

69 60 + 9

Students have been busy learning to add and subtract 2 digit numbers. We are solving our problems using more than one strategy. With addition, our strategies include decomposing numbers, using an open number line, as well as the partial sums strategy. We have also learned how to decompose and rename when necessary with subtraction. Students began by acting out the problems with base ten blocks, and renaming a ten as ten ones. We continue to draw a visual model when renaming, which helps with our number sense.

Starting this week, we will be learning how to subtract 2 digit problems with and without regrouping.

__Updates__

I recently sent home our first Math assessment in our new assessment folders. Thank you for reviewing the assessment and signing the log. Please note that our math scores are on a 5 point scale.

We are currently working on Unit 2 in Math. Students are comparing numbers into the hundreds. They are writing the standard form of two numbers and comparing the numbers using the <, >, or = symbol. For example, 26 tens > 250. Students have also been comparing numbers written in different forms. We are also working on using our knowledge of place value to order numbers from least to greatest and greatest to least.

In Math, we have worked on adding and subtracting to solve one step story problems using our learned place value strategies. Students were applying the strategies of decomposing, partial sums, and an open number line. Then we moved into solving two step story problems. Students have been busy using a model called a "tape diagram" to help solve these types of word problems. This model helps to organize our thinking when solving these types of problems. We will also be working on telling time to the nearest 5 minutes, using a.m. and p.m.

Students have been busy learning to add and subtract 2 digit numbers. We are solving our problems using more than one strategy. With addition, our strategies include decomposing numbers, using an open number line, as well as the partial sums strategy. We have also learned how to decompose and rename when necessary with subtraction. Students began by acting out the problems with base ten blocks, and renaming a ten as ten ones. We continue to draw a visual model when renaming, which helps with our number sense.

Helpful video on line plots:

https://learnzillion.com/lesson_plans/8497

Thank you for reviewing our measurement assessments and returning them to school. We have begun our next unit, which focuses on two digit addition and subtraction. Students have been using the decomposing strategy with 2 digit addition (this strategy involves breaking the numbers into expanded form, then adding).

Example:

46 40 + 6

__+23 20 + 3__

60 + 9

Starting this week, we will be learning how to subtract 2 digit problems with and without regrouping.

Thank you for reviewing our second math assessment and signing the assessment logs. We are now currently working on Unit 3 in Math, which is about measurement. Students have been busy learning to measure with inches and centimeters. They are measuring length using different tools and units, as well as comparing measurements. We are also learning how to display measurement data by making a line plot, where the horizontal scale is marked off in whole number units. Feel free to ask your child to use different tools (ruler, tape measure) to measure items around the house in inches and centimeters, as well as discuss ways in which you use measurement in your daily life.

I recently sent home our first Math assessment in our new assessment folders. Thank you for reviewing the assessment and signing the log. Please note that our math scores this year will be on a 5 point scale (last year they were on a 4 point scale)

We are currently working on Unit 2 in Math. Students are comparing numbers into the hundreds. They are writing the standard form of two numbers and comparing the numbers using the <, >, or = symbol. For example, 26 tens > 250. Students have also been comparing numbers written in different forms. We are also working on using our knowledge of place value to order numbers from least to greatest and greatest to least. Students will be taking their Unit 2 Math assessment this week.

We will be using the

**CUBES strategy**when working on problem solving.

**C- circle key numbers**

**-**

**U- underline the question****B- box math action words****E- evaluate (what step should I take)****S****solve and check**

__Major Clusters for Second Grade__

*Represent and solve problems involving addition and subtraction.

*Add and subtract within 20.

*Understand place value

*Use place value understanding and properties of operations to add and subtract.

*Measure and estimate lengths in standard units.

*Relate addition and subtraction to length.

Another great resource is the website www.learnzillion.com You can type in a topic to view information and videos related to that topic.