Quarter 2 Mathematics Units

*Please note that this unit is continued from 1st quarter.

Students will be able to:

• Use expanded form to decompose numbers to solve addition and subtraction problems. (NC.3.NBT.2)
• Apply the relationship between addition and subtraction to solve problems. (NC.3.NBT.2)
• Solve two-step word problems using the addition and subtraction. (NC.3.OA.8)
• Estimation & Rounding ~ Students need to be able to round to the nearest ten and hundred, make reasonable estimates based on rounding, and remember that estimation means NOT solving the regular way!

Videos From the County:

• Whole Number Place Value Addition with Regrouping (two digit numbers)
• Whole Number Place Value Addition without Regrouping (three digit numbers)
• Whole Number Place Value Addition with Regrouping (three digit numbers)
• Whole Number Show All Totals Addition
• Whole Number Addition on the Number Line
• Whole Number Place Value Subtraction without Ungrouping
• Whole Number Place Value Subtraction with Ungrouping
• Whole Number Expanded Form Subtraction
• Whole Number Subtraction on the Number Line

Students will be able to:

• Decompose a factor as a strategy for solving a multiplication problem. (NC.3.OA.1)
• Demonstrate that the order of the factors do not matter when you are multiplying (or adding) numbers. (NC.3.OA.1)
• Use a variety of strategies, like arrays and repeated addition, to model multiplication. (NC.3.OA.1)
• Use repeated subtraction (measurement model) and/or fair share (partition model) when solving a division problem. (NC.3.OA.2)
• Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurements quantities. (NC.3.OA.3)
• Use equal groups/equal shares as a strategy to solve multiplication and division word problems. (NC.3.OA.3)
• Use various representations to show an unknown. (NC.3.OA.3)
• Use multiplication and/or division to solve problems with an unknown factor. (NC.3.OA.6)
• Illustrate and explain using the relationship between multiplication and division. (NC.3.OA.7)
• Use addition, subtraction, and multiplication to solve two-step word problems. (NC.3.OA.8)
• Use concrete and pictorial place value models to find the product of a one-digit whole number by a multiple of 10. (NC.3.NBT.3)

Videos From the County:

• Discovering Division
• Math Whole Number Area as Multiplication
• Math Whole Number Multiplication Using the Number Line
• Math Whole Number Partition Model as Division
• Math Whole Number Multiplication Problems Using Equal Groups

Students will be able to:

• Reason with two-dimensional shapes and their attributes. (NC.3.G.1)
• Investigate, describe and reason about composing triangles and quadrilaterals and decomposing quadrilaterals. (NC.3.G.1)
• Recognize and draw examples and non-examples of types of quadrilaterals including rhombuses, rectangles, squares, parallelograms, and trapezoids. (NC.3.G.1)
• Compose and decompose quadrilaterals using triangles and quadrilaterals. (NC.3.G.1)