Grade1+OA

= Grade 1 Operations and Algebraic Thinking Domain = The Operations and Algebraic Thinking domain spans grades K-5. Concepts learned in the kindergarten Counting and Cardinality domain form the foundation for Operations and Algebraic Thinking and Numbers and Operations (Base Ten). For first grade students, there are four clusters in the Operations and Algebraic Thinking domain:
 * Represent and solve problems involving addition and subtraction
 * Understand and apply properties of operations and the relationship between addition and subtraction
 * Add and subtract within 20
 * Work with addition and subtraction equations.

Quick Links
What Your Child Will Learn Operations and Algebraic Thinking Math Vocabulary Suggestions for At-Home Activities Optional Interactive Learning Experiences

 = What Your Child Will Learn = __ Solving Addition and Subtraction Word Problems __ __ Properties of Operations and Relationship Between Addition and Subtraction __ __Add and Subtract Within 20__ __Work with Addition and Subtraction Equations__  **Grade 1 Operations and Algebraic Thinking Math Vocabulary** //**subtraction**:// find the difference when two groups are compared or find out how many are left when items are taken away from a group //**equation**:// a math statement containing an equals sign that shows two expressions that balance or equal //**sum**:// the answer in an addition sentence //**difference**:// the answer in a subtraction sentence //**equals sign**:// a sign used to show that two amounts have the same value (=) //**count on**//: start from a given number and count forward //**count back**//: start from a given number and count backward  = Suggestions for At-Home Activities =  = Optional Interactive Learning Experiences =
 * Use addition and subtraction within 20 to solve word problems with unknowns in all positions using objects, drawings, and equations
 * Solve word problems involving addition of three whole numbers whose sum is less than or equal to 20 using objects, drawings, and equations
 * Apply properties of operations as strategies to add and subtract (e.g., If 8+3=11 is known, then 3+8=11 is also known (//commutative property//) and To add 2+4+6, combine the last two number to make a ten; therefore 2+4+6=2+10=12 (//associative property//))
 * Understand subtraction as an unknown addend problem (e.g., Subtract 10-8 by finding the number that makes 10 when added to 8.)
 * Relate counting to addition and subtraction
 * Use mental strategies to add and subtract within 20, demonstrating fluency when adding and subtracting within 10.
 * Understand the meaning of the equals sign
 * Determine the unknown whole number in an addition or subtraction equation relating three whole numbers (e.g., 8+?=11; 5=?-3; 6+6=?)
 * Write and solve number sentences that involve adding or subtracting within 20
 * //addition//**//:// join together two or more groups
 * //addend//**: any numbers being added together
 * //number sentence//**: a math sentence including numbers, an operations symbol (+, -), and an equals sign (=) or a greater than/less than symbol (<, >)
 * At the store ask, "I picked out 4 oranges and you picked out 5 apples. How many fruits do we have altogether?" or "We need 6 pieces of chicken, but this package only has 4 in it. How many more pieces of chicken do we need?"
 * Have your child keep score when you play cards or active games together. Many board games require math skills as well as score keeping.
 * Use a calendar to count up or back to a special event such as a vacation, birthday, or holiday.
 * How many ways can you show the sum of ten? (0+10=10, 1+9=10, 2+8=10, etc.) Use Uno cards to show the ways you can decompose the number 10.
 * Scatter magnetic numbers on the refrigerator. Make addition and subtraction math sentences.
 * Solve problems with materials in your home such as, "There were 5 bananas in a bunch this morning. Now there are only 3. How many were eaten?"
 * Create a "hundred chart" on the floor tiles in your kitchen, with sidewalk chalk on the driveway, or with yarn on the rug. This site offers activity ideas from very basic number identification and sequence to factors and fractions!
 * Shuffle a deck of cards and deal 6 cards to each player. Deal 6 more cards face up in the center, and stack the remaining cards face down in a draw pile. The 6 face up cards represent six answers. From the cards in their hand, each player tries to find two cards whose sum or difference matches one of the answer cards. (Ace=1, Jack=11, Queen=12, King=13). If the first player makes a match, he announces the equation, picks up the answer card, and stacks it face up on top of his two cards in a bundle in front of him. Then he draws 2 new cards from the draw pile. If he is unable to make a match, he places one of his cards face up in line with the answer cards and draws a replacement from the draw pile. The second player has two options: to match any of the answer cards or to steal another player's bundle by making an equation that matches the bundle's top card. (The bundle's other two cards become part of the player's hand.) Continue until cards run out or no one can produce an equation. To calculate scores, players count up the number of cards in their bundles and subtract the number of cards still in their hands.
 * Learn to Add and Subtract**
 * [[image:https://smart.wikispaces.hcpss.org/file/view/Place_Value_Blocks.png/154339223/Place_Value_Blocks.png caption="Place_Value_Blocks.png" link="@http://www.kyrene.org/mathtools/pvb/index.html"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Mathline_Make_ten.png/154211225/Mathline_Make_ten.png caption="Mathline_Make_ten.png"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/sum_sense.png/154231831/sum_sense.png caption="sum_sense.png"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Missing_Addend1-2.png/154212245/Missing_Addend1-2.png caption="Missing_Addend1-2.png"]] ||
 * Place Value Blocks || Make Combinations of Ten || Sum Sense || Missing Addends ||
 * [[image:https://smart.wikispaces.hcpss.org/file/view/Poodle_Weigh_In.png/154275615/Poodle_Weigh_In.png caption="Poodle_Weigh_In.png"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/ThinkingBlocks.png/352822926/ThinkingBlocks.png caption="ThinkingBlocks.png"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/NLVMaddingonanumberline.png/352825922/NLVMaddingonanumberline.png caption="NLVMaddingonanumberline.png"]] || [[image:https://smart.wikispaces.hcpss.org/file/view/itcgamesduckshoot.png/352830134/itcgamesduckshoot.png caption="itcgamesduckshoot.png"]] ||
 * Equal or Not Equal || Add & Subtract Word Problems || Adding on a Number Line || Number Line ||
 * Practice Math Fact Fluency**
 * [[image:https://smart.wikispaces.hcpss.org/file/view/Tom_and_Jerry_Add.png/154049543/Tom_and_Jerry_Add.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Trimathlon_Add.png/154049545/Trimathlon_Add.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Math_Shootout_Sub.png/154055427/Math_Shootout_Sub.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Apple_Harvest_Sub.png/154057571/Apple_Harvest_Sub.png]] ||
 * Tom and Jerry Addition || Addition Trimathlon || Subtraction Shoot-Out || Subtraction Harvest ||
 * [[image:https://smart.wikispaces.hcpss.org/file/view/Cone_Crazy_Sub.png/154057573/Cone_Crazy_Sub.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Snaggers_Pond_Sub.png/154057593/Snaggers_Pond_Sub.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Sub_Flashcards.png/154057595/Sub_Flashcards.png]] || [[image:https://smart.wikispaces.hcpss.org/file/view/Hidden_picture_sub.png/154057575/Hidden_picture_sub.png]] ||
 * Cone Crazy Subtraction || Snagger's Pond || Subtraction Flashcards || Hidden Picture ||