3rd Grade Math Unit 2

Big Idea:

Describe and use place value relationships through composing, decomposing, comparing, ordering, and rounding.

Student Expectations:

Priority TEKS

3.2(A) [Readiness] Compose and decompose numbers up to 100,000 as a sum of so many ten thousands, so many thousands, so many hundreds, so many tens, and so many ones using objects, pictorial models, and numbers, including expanded notation as appropriate.

3.2(B) [Supporting] Describe the mathematical relationships found in the base-10 place value system through the hundred thousands place. (use manipulatives)

Focus TEKS

3.2(D) [Readiness] Compare and order whole numbers up to 100,000 and represent comparisons using the symbols >, <, or =.

3.2(C) [Supporting] Represent a number on a number line as being between two consecutive multiples of 10; 100; 1,000; or 10,000 and use words to describe relative size of numbers in order to round whole numbers. (end with this TEK)

Ongoing TEKS

3.4(I) [Supporting] Determine if a number is even or odd using divisibility rules.

Student Learning Targets:

• I will compose and decompose numbers using objects.
• I will compose and decompose numbers using pictorial models.
• I will compose and decompose numbers using numbers.
• I will compose and decompose numbers including expanded notation.
• I will explain the relationship found in the base-10 place value system.
• I will explain how the same digit can describe different values based on place value.

Writing Prompt: Explain the relationship between the tens place and the hundreds place.

Stem: The hundreds place is ……

Writing Prompt: How is comparing numbers similar to ordering numbers?

Stem: Comparing numbers is like ordering numbers because….

Essential Questions:

• How can we show how numbers are related to each other?
• What are numbers and how are they used in everyday life?
• Why is the base-10 place value system an efficient way to represent numbers?
• Why is it important to understand the value of numbers?

Extra Information:

Adopted Textbook: Pearson - enVision Math

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