 Author:
 Kelly Rawlston, Letoria Lewis
 Subject:
 Mathematics
 Material Type:
 Curriculum, Lesson Plan, Teaching/Learning Strategy
 Level:
 Upper Primary
 Grade:
 3
 Tags:

 3rd Grade
 Math
 NCDPI
 Rethink
 RethinkTR
 License:
 Creative Commons Attribution NonCommercial Share Alike
 Language:
 English
 Media Formats:
 Text/HTML
Education Standards
Learning Domain: Geometry
Standard: Reason with twodimensional shapes and their attributes: Investigate, describe, and reason about composing triangles and quadrilaterals and decomposing quadrilaterals; Recognize and draw examples and nonexamples of types of quadrilaterals including rhombuses, rectangles, squares, parallelograms, and trapezoids.
Learning Domain: Measurement and Data
Standard: Tell and write time to the nearest minute. Solve word problems involving addition and subtraction of time intervals within the same hour.
Learning Domain: Measurement and Data
Standard: Solve problems involving customary measurement: Estimate and measure lengths in customary units to the quarterinch and halfinch, and feet and yards to the whole unit; Estimate and measure capacity and weight in customary units to a whole number: cups, pints, quarts, gallons, ounces, and pounds; Add, subtract, multiply, or divide to solve onestep word problems involving whole number measurements of length, weight, and capacity in the same customary units.
Learning Domain: Measurement and Data
Standard: Represent and interpret scaled picture and bar graphs: Collect data by asking a question that yields data in up to four categories; Make a representation of data and interpret data in a frequency table, scaled picture graph, and/or scaled bar graph with axes provided; Solve one and twostep "how many more" and "how many less" problems using information from these graphs.
Learning Domain: Measurement and Data
Standard: Find the area of a rectangle with wholenumber side lengths by tiling without gaps or overlaps and counting unit squares.
Learning Domain: Measurement and Data
Standard: Relate area to the operations of multiplication and addition: Find the area of a rectangle with wholenumber side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths; Multiply side lengths to find areas of rectangles with wholenumber side lengths in the context of solving problems, and represent wholenumber products as rectangular areas in mathematical reasoning; Use tiles and/or arrays to illustrate and explain that the area of a rectangle can be found by partitioning it into two smaller rectangles, and that the area of the large rectangle is the sum of the two smaller rectangles.
Learning Domain: Measurement and Data
Standard: Solve problems involving perimeters of polygons, including finding the perimeter given the side lengths, and finding an unknown side length.
Learning Domain: Number and Operations in Base Ten
Standard: Add and subtract whole numbers up to and including 1,000: Use estimation strategies to assess reasonableness of answers; Model and explain how the relationship between addition and subtraction can be applied to solve addition and subtraction problems; Use expanded form to decompose numbers and then find sums and differences.
Learning Domain: Number and Operations in Base Ten
Standard: Use concrete and pictorial models, based on place value and the properties of operations, to find the product of a onedigit whole number by a multiple of 10 in the range 1090.
Learning Domain: Number and Operations  Fractions
Standard: Interpret unit fractions with denominators of 2, 3, 4, 6, and 8 as quantities formed when a whole is partitioned into equal parts: Explain that a unit fraction is one of those parts; Represent and identify unit fractions using area and length models.
Learning Domain: Number and Operations  Fractions
Standard: Interpret fractions with denominators of 2, 3, 4, 6, and 8 using area and length models: Using an area model, explain that the numerator of a fraction represents the number of equal parts of the unit fraction; Using a number line, explain that the numerator of a fraction represents the number of lengths of the unit fraction from 0.
Learning Domain: Number and Operations  Fractions
Standard: Represent equivalent fractions with area and length models by: Composing and decomposing fractions into equivalent fractions using related fractions: halves, fourths and eighths; thirds and sixths; Explaining that a fraction with the same numerator and denominator equals one whole; Expressing whole numbers as fractions, and recognize fractions that are equivalent to whole numbers.
Learning Domain: Number and Operations  Fractions
Standard: Compare two fractions with the same numerator or the same denominator by reasoning about their size, using area and length models, and using the >, <, and = symbols. Recognize that comparisons are valid only when the two fractions refer to the same whole with denominators: halves, fourths and eighths; thirds and sixths.
Learning Domain: Operations and Algebraic Thinking
Standard: For products of whole numbers with two factors up to and including 10: Interpret the factors as representing the number of equal groups and the number of objects in each group; Illustrate and explain strategies including arrays, repeated addition, decomposing a factor, and applying the commutative and associative properties.
Learning Domain: Operations and Algebraic Thinking
Standard: For wholenumber quotients of whole numbers with a onedigit divisor and a onedigit quotient: Interpret the divisor and quotient in a division equation as representing the number of equal groups and the number of objects in each group; Illustrate and explain strategies including arrays, repeated addition or subtraction, and decomposing a factor.
Learning Domain: Operations and Algebraic Thinking
Standard: Represent, interpret, and solve onestep problems involving multiplication and division: Solve multiplication word problems with factors up to and including 10. Represent the problem using arrays, pictures, and/or equations with a symbol for the unknown number to represent the problem; Solve division word problems with a divisor and quotient up to and including 10. Represent the problem using arrays, pictures, repeated subtraction and/or equations with a symbol for the unknown number to represent the problem.
Learning Domain: Operations and Algebraic Thinking
Standard: Solve an unknownfactor problem, by using division strategies and/or changing it to a multiplication problem.
Learning Domain: Operations and Algebraic Thinking
Standard: Demonstrate fluency with multiplication and division with factors, quotients and divisors up to and including 10: Know from memory all products with factors up to and including 10; Illustrate and explain using the relationship between multiplication and division; Determine the unknown whole number in a multiplication or division equation relating three whole numbers.
Learning Domain: Operations and Algebraic Thinking
Standard: Solve twostep word problems using addition, subtraction, and multiplication, representing problems using equations with a symbol for the unknown number.
Learning Domain: Operations and Algebraic Thinking
Standard: Interpret patterns of multiplication on a hundreds board and/or multiplication table.
3rd Grade Math Teacher Guide
Overview
This resource accompanies our Rethink 3rd Grade Math Course. It includes ideas for use, ways to support exceptional children, ways to extend learning, digital resources and tools, tips for supporting English Language Learners and students with visual and hearing impairments. There are also ideas for offline learning.
Rethink Education Teacher Guides
Our Teacher Guides are meant to support the use of our online course and unit content. Please use these to accompany the use of our content and for ideas to support struggling learners, those needing extension and for additional resources.