## Description

- Overview:
- This unit was created by the Rethink Education Content Development Team. This course is aligned to the NC Standards for 2nd Grade Math.

- Subject:
- Mathematics
- Level:
- Lower Primary
- Grades:
- Grade 2
- Material Type:
- Activity/Lab, Assessment, Formative Assessment, Homework/Assignment, Presentation, Unit of Study, Vocabulary
- Author:
- Kelly Rawlston, Letoria Lewis
- Date Added:
- 02/15/2023

- License:
- Creative Commons Attribution Non-Commercial Share Alike
- Language:
- English
- Media Format:
- Audio, Downloadable docs, Graphics/Photos, Text/HTML, Video

## Standards

Learning Domain: Number and Operations in Base Ten

Standard: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones: Unitize by making a hundred from a collection of ten tens; Demonstrate that the numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds, with 0 tens and 0 ones; Compose and decompose numbers using various groupings of hundreds, tens, and ones.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Count within 1000; skip-count by 5s, 10s, and 100s.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Read and write numbers, within 1000, using base-ten numerals, number names, and expanded form.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Compare two three-digit numbers based on the value of the hundreds, tens, and ones digits, using > = and < symbols to record the results of comparisons.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Demonstrate fluency with addition and subtraction, within 100, by: Flexibly using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; Comparing addition and subtraction strategies, and explaining why they work; Selecting an appropriate strategy in order to efficiently compute sums and differences.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Add up to three two-digit numbers using strategies based on place value and properties of operations.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Add and subtract, within 1000, relating the strategy to a written method, using: Concrete models or drawings; Strategies based on place value; Properties of operations; Relationship between addition and subtraction.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations in Base Ten

Standard: Mentally add 10 or 100 to a given number 100--900, and mentally subtract 10 or 100 from a given number 100--900.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Solve word problems involving: Quarters, dimes, nickels, and pennies within 99¢, using ¢ symbol appropriately; Whole dollar amounts, using the $ symbol appropriately.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Measure the length of an object in standard units by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Estimate lengths in using standard units of inches, feet, yards, centimeters, and meters.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Use addition and subtraction, within 100, to solve word problems involving lengths that are given in the same units, using equations with a symbol for the unknown number to represent the problem.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points and represent whole-number sums and differences, within 100, on a number line.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Organize, represent, and interpret data with up to four categories: Draw a picture graph and a bar graph with a single-unit scale to represent a data set; Solve simple put-together, take-apart, and compare problems using information presented in a picture and a bar graph.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Demonstrate fluency with addition and subtraction, within 20, using mental strategies.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Represent and solve addition and subtraction word problems, within 100, with unknowns in all positions, by using representations and equations with a symbol for the unknown number to represent the problem, when solving: One-Step problems: Add to/Take from-Start Unknown, Compare-Bigger Unknown, Compare-Smaller Unknown; Two-Step problems involving single digits: Add to/Take from- Change Unknown, Add to/Take From- Result Unknown.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: Determine whether a group of objects, within 20, has an odd or even number of members by: Pairing objects, then counting them by 2s; Determining whether objects can be placed into two equal groups; Writing an equation to express an even number as a sum of two equal addends.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Operations and Algebraic Thinking

Standard: 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 sum of equal addends.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Geometry

Standard: Recognize and draw triangles, quadrilaterals, pentagons, and hexagons, having specified attributes; recognize and describe attributes of rectangular prisms and cubes.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Geometry

Standard: Partition circles and rectangles into two, three, or four equal shares: Describe the shares using the words halves, thirds, half of, a third of, fourths, fourth of, quarter of; Describe the whole as two halves, three thirds, four fourths; Explain that equal shares of identical wholes need not have the same shape.

Degree of Alignment: Not Rated (0 users)

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