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Math

2nd Six Weeks                     Grade 2 Family Letter: Addition and Subtraction to 200

Dear Second Grade Families,

Our Focus

During the second six weeks, your child will continue to explore patterns and relationships of numbers to 200. Students will represent, solve, and generate addition and subtraction problems using a variety of strategies based on place value and properties of operations. They will further their understanding of the relationship between addition and subtraction.

Instructional Approach

Your child will begin to compose and decompose 2-digit numbers in order to add and subtract. The use of both concrete and pictorial models, such as open number lines and base ten blocks, will enhance your child’s knowledge of place value.  A strong understanding of how numbers can be composed and decomposed in a variety of ways will strengthen your child’s mental math abilities.  Using and illustrating a part-part whole model that represents the given quantities provides a visual means of determining which operation can be used to solve an addition or subtraction problem.  While this approach may seem different than the instructional approach from our childhood, please be reassured that students will be taught the traditional algorithm for adding and subtracting.  Our state standards mandate that students use the traditional algorithm starting in 4th grade.

Family Support

You can help your child in several ways.

• Encourage your child to practice basic addition/subtraction facts to establish automaticity. (Doubles, Combinations of 10, Doubles +1, etc.)
• Ask him/her to decompose/compose any numbers that they see or hear. “What are some different ways to break apart 12?” 10+2, 6+6, 4+4+4, etc.
• Give your child a 2-digit number and ask, “What is 10 more?  What is 10 less?  What is 20 more?  What is 20 less?”
• Ask your child real-world math problems as they arise in everyday life. For example, “Count how many toys are on the floor. How many would there be if you took 12 away?”
• Explore and discuss the key terms in the box below.

Sincerely,

The Second Grade Math Team

 Vocabulary place value: the value of a digit’s location in a numeral compose: to combine parts to create a whole (8 tens + 7 ones= 87, 7 tens + 16 ones = 87, etc.) decompose: to break a whole into parts (45 = 40 + 5, 45 = 30 + 15, etc.) sum:  the answer when two or more numbers are added difference:  the answer when two numbers are subtracted ten frame:   math tool to help visually see numbers and combinations within ten number sentence:   an expression that includes numbers and symbols, such as + - <  > = algorithm:   a set of steps used to solve a mathematical computation

Science

 Second Grade  2nd Six Weeks Unit of Study - Force and Motion Dear Second Grade Families, Our Focus In this science unit, second grade students will investigate patterns of movement, changes in an object’s position over time, and how objects can be manipulated to demonstrate a change in motion and position. Instructional Approach Using hands on investigations, students will be given many opportunities to explore force and motion. Family Support You can help your child in several ways. When you are out and about, point out moving objects to your child, and see if they are able to describe how they are moving using science terms, such as:  rolling, spinning, or sliding. Play games with your child that require them to observe the changes in the position of an object over time such as a cup rolling on the floor or a car rolling down a ramp. Encourage your child to use scientific tools such as:  rulers, kitchen timers or stopwatches, and notebooks to record data during their games.

Sincerely,

The Second Grade Team

Social Studies

2nd Grade Culture Unit-Parent Letter

Dear 2nd Grade Families,

Our Focus

During the second six weeks, second graders will be learning about different cultures and ways of life.    We will be researching ethnic and/or cultural celebrations.   This unit will help students recognize the significance of our local cultural heritage.

Instructional Approach

Students will be introduced to the concepts of traditions, celebrations and culture.  We will develop an understanding that art is part of our cultural heritage. It can also be reflected in our local music, clothing, performances and food.  We will be exploring different traditions and celebrations that are a part of every culture.  They will realize that different communities have similar and different celebrations.

Students will research our local cultural artifacts to discover Denton’s culture.  We will also expand to other communities and their heritage.  If possible, parents may be invited to share their unique experiences with their ethnic and/or cultural celebrations.

Family Support

You can help your child in several ways.

• Talk with your child about traditions you celebrate at home.
• Point out poems, statues or paintings that exhibit our local culture.
• Share the “why” various ethnic and/or cultural celebrations are important.
• Discuss how traditions are created.
• Point out the local murals around Denton, what can we learn from them?
• Listen to ethnic and/or cultural songs that your child might not hear day-to-day.
• Share memories of traditions that your family celebrates, such as Kwanzaa or Easter.

Sincerely,

The Second Grade Team