Whole Number Place Value: Our First Unit
8/23/2015
Unit Name: Whole Number Place Value
Common Core State Standards: 4.NBT.1 Recognize that in a multidigit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division. 4.NBT.2 Read and write multidigit whole numbers using baseten numerals, number names, and expanded form. Compare two multidigit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons. 4.NBT.3 Use place value understanding to round multidigit whole numbers to any place. Essential Vocabulary: · place value · greater than · less than · equal to · comparisons · compare · round · base ten · digit · ones · tens · hundreds · thousands · ten times · partial product · rectangular sections · word form · standard form · expanded form · greatest · least · expanded notation · unit Unit Overview: In this unit, students will build on their understanding of place value to the thousands place in order to expand their understanding to the millions place. This is the first time students will be exposed to the concept of the place of the digit/number to the left is 10 times larger than the place of the digit/number to the right. Students will be asked to reason about numbers using place value symbols >, <, and =. Students will also need to understand how to manipulate numbers into various expanded forms in order to flexibly add, subtract, multiply and divide. For example, the student should understand 285 = 200 + 80 + 5; or 285 = 28 tens and 5 ones; or 285 = 18 tens and 105 ones; etc. In addition, students need to understand the role of a comma and rounding techniques beyond algorithms and procedures. Strategies/Skills: Students will explore place value without the use of formal algorithms. They are expected to use a variety of models to support their reasoning about numbers. · Number lines · Hundreds board · Area models/Rectangular Sections · Relationship between multiplication & division · Expanded, word, and numerical form of numbers Video Support: Video support can be found on LearnZillion. · https://learnzillion.com/ o Understand Place Value: Multiplying by a power of 10 https://learnzillion.com/lessons/16understandplacevaluemultiplyingbyapowerof10 o Understand Place Value: Dividing by a power of 10 https://learnzillion.com/student/lessons/19understandplacevaluedividingbyapowerof10 o Write numbers in expanded form https://learnzillion.com/student/lessons/13writenumbersinexpandedform o Write numbers in word form: using place value https://learnzillion.com/student/lessons/14writenumbersinwordformusingplacevalues o Find place value: using pictures https://learnzillion.com/student/lessons/12findplacevalueusingpictures o Compare numbers: using place value https://learnzillion.com/student/lessons/15comparenumbersusingplacevalues o Locate benchmark numbers on a number line https://learnzillion.com/student/lessons/523locatebenchmarknumbersonanumberline o Round numbers to the leading digit using a number line https://learnzillion.com/student/lessons/524roundnumberstotheleadingdigitusinganumberline o Round numbers to a specified place on a number line https://learnzillion.com/student/lessons/525roundnumberstoaspecifiedplaceonanumberline o Round 9’s using base ten blocks https://learnzillion.com/student/lessons/526round9susingbasetenblocks
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Mrs. Ana RhyneI teach 4th grade math and science at Weatherstone Elementary School. I graduated from Meredith College with a BA in Spanish and K6 licensure. Archives
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