# Laurel County Schools

Document Sample

```					                                                                     Laurel County Schools
Mathematics
Operations and Algebraic Thinking
Unit 2
Instructional Days 61- 84

M.2.OA.1
□ 1. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart,
and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem
Knowledge Target                                                 Student Target                                                  Vocabulary
Identify the unknown in an addition or subtraction                   I can choose when to use addition and/or                       N/A
word problem.                                                         subtraction in a word problem.
     I can write an addition and subtraction equation
Write an addition and subtraction equation with a
symbol for the unknown.                                               with a symbol for the unknown.

Reasoning Target                                                  Student Target                                                 Assessment
Use drawings or equations to represent one- and two-step              I can use drawings or equations to represent
word problems.                                                         one- and two-step word problems.
     I can add and subtract within 100 to solve one
Add and subtract within 100 to solve one-step word
problems with unknowns in all positions.                               and two step word problems with unknowns in all
positions.
Add and subtract within 100 to solve two-step word                    I can choose when to add or subtract in a word
problems with unknowns in all positions.                               problem.
Determine operation needed to solve addition and
subtraction problems in situations including add to, take
from, put together, take apart, and compare.
Make sense of          Reason abstractly      Construct viable       Model with           Use appropriate        Attend to precision     Look for and make   Look for and express
problems and           and quantitatively     arguments and          mathematics          tools strategically                            use of structure    regularity in repeated
persevere in                                  critiques the                                                                                                  reasoning
solving them.                                 reasoning others

Unit 2                                                                                                                                                                       Page 1
M.2.OA.2
□ 2. Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers
Knowledge Target                                               Student Target                                             Vocabulary
Know mental strategies for addition and subtraction.               I can recall mental strategies for addition and           N/A
subtraction.
Know from memory all sums of two one-digit
     I can recall from memory all sums of two one-
numbers.
digit numbers.
Reasoning Target                                                Student Target                                            Assessment
Apply mental strategies to add and subtract fluently                I can use mental strategies to add and subtract
within 20.                                                           numbers within 20 with ease.
Make sense of         Reason                Construct viable       Model with            Use appropriate        Attend to         Look for and       Look for and express
problems and          abstractly and        arguments and          mathematics           tools strategically    precision         make use of        regularity in repeated
persevere in          quantitatively        critiques the                                                                         structure          reasoning
solving them.                               reasoning of
others

Unit 2                                                                                                                                                             Page 2
M.2.OA.3
□ 3. Determine whether a groups of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to
express an even number as a sum of two equal addends.
Knowledge Target                                                Student Target                                             Vocabulary
Count a group of objects up to 20 by 2s.                           I can count a group of objects up to 20 by 2s.            Odd
     I can identify a group of objects as being odd or         Even
Recognize in groups that have even numbers
even using different strategies
objects will pair up evenly.

Recognize in groups of odd numbers objects will
not pair up evenly.

Reasoning Target                                                Student Target                                            Assessment
Determine whether a group of objects is odd or even,                I can determine whether a group of objects is
using a variety of strategies.                                       odd or even, using a variety of strategies.
     I can figure out that all even numbers can be
Generalize the fact that all even numbers can be formed
     I can write an equation to show an even sum has
Write an equation to express a given even number as a                the same addends.

Make sense of         Reason                Construct viable       Model with            Use appropriate        Attend to         Look for and       Look for and express
problems and          abstractly and        arguments and          mathematics           tools strategically    precision         make use of        regularity in repeated
persevere in          quantitatively        critiques the                                                                         structure          reasoning
solving them.                               reasoning of
others

Unit 2                                                                                                                                                             Page 3
M.2.OA.4
□ 4. Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a
Knowledge Target                                                Student Target                                            Vocabulary
Write an equation with repeated equal addends                       I can write an equation with repeated equal             Rectangular array

Reasoning Target                                                 Student Target                                            Assessment
Generalize the fact that arrays can be written as repeated           I can understand that arrays can be written as
     I can solve repeated addition problems to find
Solve repeated addition problems to find the number of
objects using rectangular arrays.                                     the number of objects using rectangular arrays.

Make sense of         Reason                 Construct viable       Model with           Use appropriate       Attend to         Look for and        Look for and express
problems and          abstractly and         arguments and          mathematics          tools strategically   precision         make use of         regularity in repeated
persevere in          quantitatively         critiques the                                                                       structure           reasoning
solving them.                                reasoning of
others

Unit 2                                                                                                                                                             Page 4

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 2 posted: 10/3/2012 language: Unknown pages: 4
How are you planning on using Docstoc?