№ files_lp_3_process_7_039694
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Mathematics performance assessment task aligned to Grade 2 North Carolina standards requiring students to represent and solve a comparison word problem within 100 using an equation with an unknown and an explanation of their reasoning.
Grade Level:
2
Subject Area:
Mathematics
Domain:
Operations and Algebraic Thinking; Number and Operations in Base Ten
Cluster:
Represent and solve problems involving addition and subtraction; Use place value understanding and properties of operations to add and subtract
Standards:
NC.2.OA.1; NC.2.NBT.5
Standard Focus:
Addition and subtraction word problems within 100 with unknowns in all positions; fluency using place value and properties of operations
Task Type:
Performance Task
Assessment Type:
Formative Assessment
Materials:
SF, pencil, paper, counters, base ten materials
Problem Context:
Comparison word problem involving quantities of beads
Required Representation:
Equation with a symbol for the unknown number
Cognitive Demand:
One-step comparison problem; explanation of reasoning using words, numbers, or pictures
Expected Answer:
39 beads
Strategies Referenced:
Counting All; Counting On; Makes Tens; Basic Facts; Creates easier or known sums; Doubles; Doubles +/- 1, 2
Standards for Mathematical Practice:
Make sense of problems and persevere; Reason abstractly and quantitatively; Construct viable arguments and critique reasoning; Model with mathematics; Use appropriate tools strategically; Attend to precision; Look for and make use of structure; Look for and express regularity in repeated reasoning
Student Performance Levels:
Not Yet Proficient; Progressing; Meets Expectation
Price: 8 / 10 USD
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2026
Region / City:
El Paso County, Colorado Springs, CO
Subject:
Procurement of High Build Traffic Paint and Glass Beads
Document Type:
Invitation for Bid
Issuing Authority:
El Paso County Contracts and Procurement Division
Contact Person:
Becky Schaffstein, CPPB
Response Deadline:
March 11, 2026, 3:00 P.M. MST
Contract Start Date:
April 1, 2026
Contract End Date:
December 31, 2026
Option to Renew:
Up to four additional one-year periods with potential price adjustments
Submission Method:
Electronically via Rocky Mountain E-Purchasing System
Non-Appropriation Clause:
Applicable under C.R.S.§ 29-1-110
Year:
Not specified
Region / City:
Hejia village, Zhouling
Topic:
Archaeology, Material Analysis
Document Type:
Research Study
Author:
Not specified
Target Audience:
Scholars, Researchers in Archaeology and Material Science
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
Not specified
Region / City:
Not specified
Subject:
Counting, Sorting, Beads
Document Type:
Activity
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Children
Period of Activity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
Not specified
Region / City:
Not specified
Topic:
Education, Learning
Document Type:
Activity Guide
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Children
Period of Action:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Note:
Year
Topic:
Remote Sensing, Image Processing
Document Type:
Tutorial
Target Audience:
Researchers, GIS Specialists
Year:
1st Grade
Region / City:
Not specified
Subject:
Mathematics
Document Type:
Assessment/Activity Report
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Educators, Parents
Effective Date:
Not specified
Date of Modification:
Not specified
Year:
2026
Institution:
St James’ CE Primary School
Region / City:
United Kingdom
Document Type:
Curriculum guidance
Subject:
Mathematics – Mental Calculation
Educational Stage:
Key Stage 1 and Key Stage 2
Target Audience:
Teachers and educators
Skills Covered:
Addition, subtraction, number bonds, partitioning, place value, mental calculation strategies
Year Groups:
1, 2, 3, 4
Prerequisite Knowledge:
Counting, understanding of place value, one-to-one correspondence
End Goals:
Fluency in addition and subtraction within specified ranges, ability to use mental calculation strategies appropriately
Contextual Description:
Curriculum document detailing the expected mental calculation skills, strategies, and prerequisite knowledge for primary school students across years 1 to 4, including rapid recall, partitioning, and place value understanding.
Year:
2016
Region / City:
N/A
Subject:
Math
Document Type:
Homework Assignment
Author:
Mrs. S, Ms. Church, Ms. Volpe
Target Audience:
6th Grade Students
Period of Validity:
June 13–17, 2016
Approval Date:
N/A
Modification Date:
N/A
Year:
Not specified
Region / City:
Not specified
Topic:
Fractions, Arithmetic
Document Type:
Educational Material
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Students learning arithmetic or fractions
Effective Period:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Date:
9/11/20
Note:
Region / City
Subject:
Math
Document Type:
Lesson Plan
Target Audience:
Teachers, students of Class 3
Period of Activity:
9th November 2020 to 13th November 2020
Subject:
Mathematics
Topic:
Combining functions
Unit:
Unit 4
Grade level:
Math 3
Document type:
Educational worksheet
Concepts covered:
Polynomial standard form, degree of a polynomial, operations with functions
Mathematical operations:
Addition, subtraction, multiplication, division of functions
Functions included:
Linear, quadratic, cubic
Exercises:
Worked examples and practice problems
Educational purpose:
Practice identifying results of combining algebraic functions
Key notation:
f(x), g(x), h(x), m(x), n(x), p(x)
Year:
2026
Region / City:
Not specified
Topic:
Mathematics, Arithmetic
Document Type:
Educational example
Institution / Organization:
Not specified
Author:
Not specified
Target Audience:
Students learning decimal operations
Period Covered:
Not specified
Examples Included:
Addition and subtraction of decimal numbers using place value tables
Key Concepts:
Decimal addition, decimal subtraction, place value, step-by-step calculations
Year:
2026
Region / City:
Florida
Subject:
Mathematics
Document Type:
Educational Guide
Institution:
Florida Education Standards
Author:
Laurie
Target Audience:
Elementary School Students
Period of Validity:
2026 academic year
Approval Date:
Not specified
Revision Date:
Not specified
Year:
2026
Region / City:
International / Online Classroom
Subject:
Mathematics
Document Type:
Educational Exercise
Author:
Unspecified (likely teacher or educational content creator)
Target Audience:
Elementary school students
Skills Focused:
Addition, subtraction, problem-solving
Number Range:
Whole numbers up to 100
Context Examples:
TV shows, movies, popular characters
Instruction Method:
Group work with collaborative problem creation
Date Created:
2026-03-06
Math Unit 2: Addition & Subtraction within 1000 – Activities for Grade 2 at Pakistan School, Bahrain
Year:
2026
Institution:
Pakistan School, Kingdom of Bahrain
Subject:
Mathematics
Grade Level:
2
Unit:
Addition & Subtraction within 1000
Activity Numbers:
1, 2, 3
Task Type:
Exercises and Word Problems
Materials:
E-Support and Learning Material
Topics Covered:
Addition without carrying, addition with carrying, three-digit sums, word problems
Pages in Book:
31, 39
Target Audience:
Students of Grade 2
Date Prepared:
2026
Format:
Printable classroom exercises
Year:
2020
Region / School Level:
Grade 2
Subject:
Mathematics
Term:
2
Concepts Covered:
Family facts, Doubles and near doubles, Addition using building up and breaking down numbers, Subtraction using building up and breaking down numbers
Time Allocation:
1 hour per day
Health Guidelines Included:
Handwashing, social distancing, respiratory hygiene, stay at home
Resources:
Worksheets, DBE workbook
Activities:
Counting, mental mathematics, number bonds, addition and subtraction exercises
Dates of Instruction:
4 May 2020 – 8 May 2020
Year:
2026
School:
Loma Linda Elementary
Grade Level:
1st and 2nd grade
Domain:
Number and Operations in Base Ten
Cluster:
Use place value understanding and properties of operations to add and subtract
Standard:
2.NBT.9
Materials:
SF, Pencil, Paper, pre-grouped base ten materials
Lesson Objective:
Choose and explain solution strategies and record with a written addition or subtraction method
Activities:
Problem Set, Student Debrief, Exit Ticket
Mathematical Practices:
1, 2, 3, 4, 5, 6, 7, 8
Task Type:
Classroom instructional task
Target Skills:
Addition and subtraction using place value, reasoning, strategy comparison, peer discussion
Assessment:
Observation, student explanations, exit ticket completion
Context:
Instructional resource for second-grade mathematics focused on teaching addition and subtraction strategies using place value and properties of operations, including guided problem-solving and peer comparison activities.
Grade/Course:
3rd grade math
Category:
Mathematics curriculum standards
Topics:
Addition, subtraction, perimeter, money, numerical patterns
Skills:
Analyze & interpret, apply, cause & effect, compare, classify, categorize, create/represent, draw conclusions, evaluate, generalize, infer, justify, make connections, predict/estimate, sequence/order, summarize, estimation
Materials:
Word problems, charts/tables, graphs, expressions/equations, manipulatives, diagrams/images, number lines, base ten blocks, algebra tiles, measurement tools, formulas, geometric figures
Targeted Vocabulary:
Sum, difference, compatible number, joining, additive pattern, rule, bills, dollar, dime, penny, nickel, quarter
Instructional Strategies:
Who am I?, Catch & release, Mystery sequence, Word whack, Hand up hand over, Compare/contrast, Password, Mystery bag, Tour of knowledge
Year:
Not specified
Region / City:
Not specified
Topic:
Mathematics
Document Type:
Educational Resource
Organization / Institution:
Not specified
Author:
Not specified
Target Audience:
Teachers, Students, Parents
Effective Date:
Not specified
Date of Approval:
Not specified
Date of Revision:
Not specified