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Multiplication Using Arrays
NC.3.OA.1
Represent and solve problems involving multiplication and division.
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.
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Quadrilaterals
NC.3. G.1 Reason for two-dimensional shapes and their attributes.
• Investigate, describe, and reason about composing triangles and quadrilaterals and decomposing quadrilaterals.
• Recognize and draw examples and non-examples of types of quadrilaterals, including rhombuses, rectangles, squares, parallelograms, and trapezoids.