SALTA 3rd grade

3.OA.3 3.OA.5

Strand: Operations and Algebraic Thinking Third grade students represent and solve problems involving multiplication and division within 100. Standard 3.OA.3 Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities. For example, use drawings and equations with a symbol for the unknown number to represent the problem. Standard 3.OA.5 Apply properties of operations as strategies to multiply and divide. For example: If 6 x 4 = 24 is known, then 4 x 6 = 24 is also known (commutative property of multiplication). 3 x 5 x 2 can be found by 3 x 5= 15, then 15 x 2 = 30, or by 5 x 2 = 10, then 3 x 10 = 30 (associative property of multiplication). Knowing that 8 x 5 = 40 and 8 x 2 = 16, one can find 8 x 7 as 8 x (5 + 2) = (8 x 5) + (8 x 2) = 40 + 16 = 56 (distributive property). (Third grade students may, but need not, use formal terms for these properties.)

Topic 2: Multiplication Facts: Use Patterns Pick A Project: How can you make a unique clock tower?, Who won the College World Series, How many are in your crew?, How many can you sell?

Topic 2: • multiples • identity (one) property of multiplication • zero property of multiplication

No 3-Act Task for Topic 2

2-1 2 and 5 as Factors 2-2 9 as a Factor 2-3 Apply Properties: Multiply by 0 and 1 2-4 Multiply by 10 2-5 Multiplication Facts: 0, 1, 2, 5, 9 and 10 2-6 Problem Solving: Model with Math

Topic 2: Manipulatives •

Two-color counters

Place Value Blocks – tens only

•

Assessment Options : Topic 2 Assessment – Multiplication Facts: Use Patterns (print or online) Topic 2 Performance Assessment – Multiplication Facts: Use Patterns Team Created Assessment

Assessment Tasks - Topic 2

Procedural Check

Application Task

3.OA.3

Mr . Boon’s class is sorting rocks. Each bag holds 7 rocks. Mateo has 33 rocks. Does he have enough to fill 5 bags? Use a drawing to justify your answer.

Write two different equations with arrays above. (DOK 2)

(DOK 3)

3.OA.5

3 x 1= 1 x 3 = 3 x 0= 0 x 3 =

Jude says that when you multiple any number by 0 the answer is always 0. Is Jude correct? Draw or write to explain how you know and to justify your answer.

0 x ____ = 0 1 x ____ = 7 (DOK 1)

(DOK 3)