### 4th Grade - Unit 6 Math

 Unit 6: Division and Number Theory Text Mr. Yen's Videos Youtube Video Names and Links Page Chapter 12 - Divide Greater Numbers Location: Division of Whole Numbers Lesson 1 - Hands On: Model Division 260 Lesson 2 - Divide Larger Numbers and Remainders 262 Division Introduction Introduction to Division Lesson 3 - Hands On: Regroup in Division 266 Single Digit Divsion with Bigger Dividends Divison of a Number by a Single Digit Divisor Lesson 4 - Divide Multiples of 10 270 Dividing Multiple of 10 by a Single Digit Divisor Dividing Multiples of 10 Lesson 5 - Problem Solving Plan: Interpret Remainders 272 Chapter Review / Test 276 Chapter 13 - Divide 3-Digit Numbers Location: Division of Whole Numbers Lesson 1 - Hands On: Model Division: 3-Digit Dividends 280 Lesson 2 - 3-Digit Quotients 282 Division with Three Digit Quotients Three Digit Quotient Divison Lesson 3 - Place the First Digit of the Quotient 286 Placing that First Digit in the Quotient Long (column) division - Placing that First Digit in the Quotient Lesson 4 - Zeroes in the Quotient 290 Column Division (Long Division) Column Division / Long Division Lesson 4a (Alternate Approaches) Division with Zeroes in Quotient Division with Zeroes in the Quotient Lesson 4b (Long Division Revisited) Practice Long (Column) Division Long (Column) Division by Single Digit Practice Lesson 5 - Problem Solving Plan: Finding an Average 292 Partial Quotient Division Partial Quotient Division Chapter Review / Test 296 Division Decomposed Division Decomposed Location: Statistics and Data Finding Averages Chapter 14 - Number Theory Location: Factoring Lesson 1 - Hands On: Find Factors of a Number 300 Lesson 2 - Divisibility Rules 302 Divisibility Rules Divisibility Rules Lesson 3 - Prime and Composite NumbersLesson 3a 306 What are Factors? Factors Lesson 4 - Factor Trees 308 Prime/Composite Numbers Prime and Composite Numbers Lesson 5 - PS Field Trip: San Diego County Fair 312 Factor Tress Factor Trees Chapter Review / Test 316