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1.OA.A.1:  using addition/subtraction to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions.
1.OA.B.3:  apply properties of operations as strategies to add and subtract using commutative and associative properties.
1.OA.C.5:  relate counting to addition and subtraction
1.OA.C.6:  add and subtract within 20 , demonstrating fluency for addition and subtraction to 10 using counting on, making 10, decomposing numbers, using relationship between addition and subtraction and creating equivalents
1.OA.D.7:  understand the meaning of equal sign and determine if equations are T or F.
1.OA.D.8:  determine the unknown whole number in an addition/subtraction equation, relating 3 whole numbers, i.e. 1 + ?=4 or 5+6=?

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-We know we can visualize an add to story problem. Today we're going to do that with a take from story problem.
We know that we can use pictures, numbers and words to represent out solution when we add.  Today we're going to practice doing that with subtraction.

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-Visualizing story problems
-Counting to and back to 30
-Using pictures, numbers, and words to represent a solution

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MWI " Math Symbols:  Addition and Subtraction"

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MWI " Math Symbols:  Addition and Subtraction"

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Activity 2:  Solving a Subtraction Story Problem on Paper                                                         Assessment Checklist MP1 (A3)

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Activity 2:  Solving a Subtraction Story Problem on Paper                                                         Assessment Checklist MP1 (A3)

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Observe students along the continuum form understanding the story and question all the way to meeting the "I Cans" and as far as the last column "Tries to make sense of others' solution pathways."

Assessment Checklist MP8 (A4)
Watch for how students are using a solution from one story to solve a related problem.

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Remind about deciding where and when to use these.

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-Follow routine of Vis/Ret/More or Less/S&S/Model Methods
-TN9
*Can the first problem help you solve this problem?
*Can you share your thinking in solving this problem?
-TN10 Moving them forward
*Words:  explain orally and expand
*Pictures:  add numbers or organize better
*Numbers/Equations:  Can you explain what these mean?
-TN14 Understanding Approaches
*Counting All
*Counting on or back
*Counting up (Subtraction only)
*Numerical Reasoning (making sense of the values)
-TN15  Relationship Add/Subt
*add/subt fluency is dependent upon understanding this relationship.
*watch for different ways students interplay these two operations

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Solving a take from story problem, 9-4=5 and showing their work.

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equation
minus
equals
subtraction sign
minus sign

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-I can visualize a take from story problem.
-I can represent a solution to a take from problem with pictures and numbers.
-I can solve by seeing how they are related.

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-Start with/Get To:  Get to 1
-Reinforcing counting back from 30 and using the number line.
-Second time playing, will count as a class.
??? Can we start counting with a bigger number?
???How will we do that?

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DB9 Subtraction Story Aloud
*Have several retell.
*Be sure to ask questions to dig deeper in their responses.
*Repeat questions to different students.
*As students share strategies, record them.
*Pick one to remodel or all if time.

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-some students may add on the 4 marbles

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take from problem
visualize
represent

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-Set Up, drop-down menu
-Student page ready in separate tab

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-May need to reread or simplify the story.
-Ask child to retell.
-Stretch beyond their "shown work", i.e. add numbers, clarify pictures, organize

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analyze

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-Review Words on Wall/Focus Board
-Ask restate using vocabulary word

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-What happened first?  Next?
-At the end of story, did he have more or less than he started with?
-What was the first thing you did to solve the problem?
-Tell me about your thinking.
-How did you know?

Sentence Starters:
"The strategy I used was...."
"The first thing I did to solve was..."

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Activity 2 Solving Subtraction Problem on Paper

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Activity 2 Solving Subtraction Problem on Paper

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-Can you retell the story to me?
-What are we trying to find out?--What do we know?
-What strategy did you use?

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-How did you know what problem the roll represented?
-How did you solve the problem?
-Do the results match the problem?

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-How did you know what problem the roll represented?
-How did you solve the problem?

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-If having difficulty, retell story more simply with only important details.
-Have student retell and discuss pictures.

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Activity 1 Subtraction Story Problems on Paper

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Activity 1 Subtraction Story Problems on Paper

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-Clarify the problem, retell with fewer details, using counters.
-Scaffold a Solution, Cant' understand recording, have them tell you then work together to figure out how to show it.
-Adapt a Task, Solves it easily, have student show another way or do related problem on the next page.

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-have cubes ready for concrete manipulations

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Kahoot! | Learning games | Make learning awesome!

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Kahoot! is a game-based learning platform that brings engagement and fun to 1+ billion players every year at school, at work, and at home.

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Math Centers that Deliver - Differentiation Done Right | HappyNumbers.com

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While you teach small groups, Happy Numbers serves as an independent math center, providing individualized instruction for the rest of the class.

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Tell me about your thinking...