Unit 2:  Multiplication and Division

Time Frame:  27 - 30 Days

 

 

Math > Grade 3 > Unit 2

 

Unit Description

Students will develop experience with some uses of multiplication and division, students will work with things that come in groups, patterns in the multiplication tables using 100 charts, writing and illustrating multiplication sentences, using multiplication notation, and working with rectangular arrays. They invent and solve problems about the number of legs on living creatures. Students become familiar with the multiplication tables up to the 12’s, with emphasis on multiples with totals under 50.They also invent their own ways of solving multiplication and division problems. They practice mathematical processes that they will be using all year: working with peers, writing and drawing about their work, and discussing alternative strategies.

 

Enduring Understandings

·         I can show how to multiply in different ways.

·         I can solve problems in my world by using multiplication.

·         Mental pictures help me remember facts and ideas.

·         I can learn more from working the problem than looking at the answer.

·         Multiplication is the opposite of division.

 

Essential Questions

·         How can I show how to solve a multiplication problem in different ways?

·         How can multiplication help me?

·         Why do mental models help me remember?

·         How can working a problem help me better understand the answer?

·         How can I use multiplication to help me with division?

·         How can I use division to help me with multiplication?

GLEs: 4, 5, 6, 7, 8, 9, 13, 15, 16, 18, 37, 42, 43, 44, 45, 46, 47

Students will know…

·         Problem solving strategies

·         Arrays

·         Multiplication

·         Division

·         Skip counting

·         Factors, Multiples, Products

·         Hundred chart

·         Twice (two times as many)

·         Number sense

·         Repeated addition

·         Fact families

·         Dividend, Divisor, Quotient

·         Multiplication chart/table

·         Remainder

·         Equal/equally

·         Commutative (order Property of Multiplication)

·         Symbols +, =,-, x, and ÷

Students will be able to…

·         Determine the appropriate strategy to use when representing a multiplication problem.

·         Apply their knowledge of fact families to solve real life problems.

·         Relate multiplication to skip counting and repeated addition.

·         Use strategies to find the missing product or factor in a multiplication number sentence.

·         Locate patterns to solve problems.

·         Show that multiplication and division are related.

 

 

Assessments

·       Performance Task

·       Performance Task – Rubric

·       Performance Task – Notes

·       Performance Task – Graph Paper

·       Assessment Task – 7

·       Assessment Task – 8

·       Assessment Task – 10

·       Assessment Task – 11

·       Task Checklist

 

·       EDC Sample Assessment

 

Multiplication and Division Practice

·       Can You Find the ABC’s

·       Animal Relationships

·       Equations with Number Tiles

·       Relationships in Foods

·       Multiplication / Division Problems