Title: Betcha! By Stuart J. Murphy

                          

                                    

Title:  BETCHA!

Posted by Maria L. Vega

Author: Stuart J. Murphy

Illustrator: S.D Schindler

Recommended Grade Level: 1-6

CCSSM Content Standards:

CCSS.MATH.CONTENT.1.NBT.C.4

Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

CCSS.MATH.CONTENT.2.NBT.B.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

CCSS.MATH.CONTENT.3.NBT.A.1

Use place value understanding to round whole numbers to the nearest 10 or 100.

CCSS.MATH.CONTENT.4.OA.A.2

Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.1

CCSS.MATH.CONTENT.4.OA.A.3

Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

CCSS.MATH.CONTENT.5.NBT.A.2

Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote powers of 10.

CCSS.MATH.CONTENT.6.NS.B.2

Fluently divide multi-digit numbers using the standard algorithm.

CCSSM SMP:

CCSS.MATH.PRACTICE.MP1 Make sense of problems and persevere in solving them.

CCSS.MATH.PRACTICE.MP4 Model with mathematics.

CCSS.MATH.PRACTICE.MP5 Use appropriate tools strategically.

CCSS.MATH.PRACTICE.MP7 Look for and make use of structure.

CCSS.MATH.PRACTICE.MP8 Look for and express regularity in repeated reasoning.

Summary: This book is a fun way to teach multiplication, division, place value and estimation. Two friends challenge each other by estimating the value and amount of random objects.  As they challenge themselves they use various math strategies to come up with either a correct answer or a close estimate.

Rating: *****

Classroom Ideas/ Lesson Ideas:

1^st -2^nd Grade: Students will sit in a large circle. The teacher will pour a bag of jellybeans onto the floor. The children will identify the three types and guess of which type there is the most. Then, they will estimate how many there are of each type. We will quickly discuss how close the students were to being correct in their estimates.

3^rd -6^th Grade: Choose something that may be challenging to count.  For example, a crowd of people in a large place, the number of tables in a restaurant or pop corn in a bag. Facilitate a conversation with your students of different strategies for making these estimates. Then have a student find the true value of the estimate.