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  • MCCRS.Math.Content.2.OA.A.1
100th Day of School Activities
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Resources to mark the 100th day of school with math activities. Challenge students to generate 100 different ways to represent the number 100. Students will easily generate 99 + 1 and 50 + 50, but encourage them to think out of the box. Challenge them to include examples from all of the NCTM Standards strands: number sense, numerical operations, geometry, measurement, algebra, patterns, data analysis, probability, discrete math, Create a class list to record the best entries. Some teachers write 100 in big bubble numeral style and then record the entries inside the numerals.

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Mathwire
Author:
Terry Kawas
Date Added:
02/16/2011
Remix
2.OA.1 Sample Tasks
Conditional Remix & Share Permitted
CC BY-SA
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This resource houses links to a variety of sample math tasks aligned to the Common Core standard. Sources may include but are not limited to: Illustrative Mathematics, PARCC, Khan Academy, and the Illinois State Board of Education.

Subject:
Mathematics
Material Type:
Assessment
Homework/Assignment
Lecture
Teaching/Learning Strategy
Author:
Tim Farquer
Date Added:
08/08/2019
2.OA.A.1- Modeling Multi- Step Word Problems_Brooks' Wallet
Conditional Remix & Share Permitted
CC BY-NC-SA
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A mathematics task that involves a multi-step word problem related to addition and subtraction situations. Students are expected to model with mathematics as they complete the task. Task relates to standard 2.OA. A.1

Subject:
Education
Mathematics
Material Type:
Activity/Lab
Author:
MSDE Admin
Linda Schoenbrodt
Chelsea Davies
Date Added:
10/04/2018
2.OA.A.1 Modeling Two-Step Word Problems_Flower Shop
Conditional Remix & Share Permitted
CC BY-NC-SA
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This task has students solve a multi-step addition and subtraction problem based on a given data chart. Students are solving a variety of problem types involving addition and subtraction. This task is related to evidence statement 3.D.2 and Common Core Standard 2.OA.A.1

Subject:
Education
Mathematics
Material Type:
Activity/Lab
Assessment
Homework/Assignment
Author:
MSDE Admin
Linda Schoenbrodt
Chelsea Davies
Date Added:
09/17/2018
2.OA, NBT Saving Money 2
Unrestricted Use
CC BY
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This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Louis wants to give \$15 to help kids who need school supplies. He also wants to buy a pair of shoes for \$39. How much money will he have to save for ...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
01/02/2013
Bug Calculations -- Out Teach
Unrestricted Use
CC BY
Rating
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In this lesson, students use the real-world application of insect monitoring to practice their fluency with addition and subtraction.

Subject:
Mathematics
Material Type:
Lesson Plan
Author:
Out Teach
Date Added:
06/03/2021
Grade 2 Module 1: Sums and Differences to 20
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CC BY-NC-SA
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Module 1 sets the foundation for students to master the sums and differences to 20 and to  subsequently apply these skills to fluently add one-digit to two-digit numbers at least through 100 using place value understandings, properties of operations and the relationship between addition and subtraction.

Subject:
Numbers and Operations
Material Type:
Module
Provider:
New York State Education Department
Provider Set:
EngageNY
Date Added:
05/11/2013
Grade 2 Module 3: Place Value, Counting, and Comparison of Numbers to 1,000
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this 25-day Grade 2 module, students expand their skill with and understanding of units by bundling ones, tens, and hundreds up to a thousand with straws. Unlike the length of 10 centimeters in Module 2, these bundles are discrete sets. One unit can be grabbed and counted just like a banana?1 hundred, 2 hundred, 3 hundred, etc. A number in Grade 1 generally consisted of two different units, tens and ones. Now, in Grade 2, a number generally consists of three units: hundreds, tens, and ones. The bundled units are organized by separating them largest to smallest, ordered from left to right. Over the course of the module, instruction moves from physical bundles that show the proportionality of the units to non-proportional place value disks and to numerals on the place value chart.

Subject:
Numbers and Operations
Material Type:
Module
Provider:
New York State Education Department
Provider Set:
EngageNY
Date Added:
11/25/2012
Grade 2 Module 4:  Addition and Subtraction Within 200 with Word Problems to 100
Conditional Remix & Share Permitted
CC BY-NC-SA
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In Module 4, students develop place value strategies to fluently add and subtract within 100; they represent and solve one- and two-step word problems of varying types within 100; and they develop conceptual understanding of addition and subtraction of multi-digit numbers within 200.  Using a concrete to pictorial to abstract approach, students use manipulatives and math drawings to develop an understanding of the composition and decomposition of units, and they relate these representations to the standard algorithm for addition and subtraction.

Subject:
Numbers and Operations
Material Type:
Module
Provider:
New York State Education Department
Provider Set:
EngageNY
Date Added:
07/05/2013
Number Sense Activities: Climb the Ladder
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Some students need prompts to help them write mathematical expressions for target numbers. Climb the Ladder is an activity that prompts students to move from all addition or subtraction problems and include many mathematical topics to generate equivalent names.

Material Type:
Activity/Lab
Provider:
Mathwire
Author:
Terry Kawas
Date Added:
02/16/2011