SKU: 13482306205

Singapore Math Dimensions Math Textbook 6A

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Singapore Math Dimensions Math Textbook 6ADimensions Math Textbook 6A Chapter 1: Whole Numbers 1. 1 Order of Operations A. Expressions and Equations B. Exponents C. Order of Operations without Parentheses D. Order of Operations with Parentheses 1. 2 Factors and Multiples A. Factors B. Multiples 1. 3 Multiplication A. Properties of Multiplication B. Mental Multiplication 1. 4 Division A. Properties of Division B. Mental Division In A Nutshell Write In Your Journal Extend Your Learning Curve

Dimensions Math® Textbook 6A

Chapter 1: Whole Numbers

1.1 Order of Operations

A. Expressions and Equations
B. Exponents
C. Order of Operations without Parentheses
D. Order of Operations with Parentheses

1.2 Factors and Multiples

A. Factors
B. Multiples

1.3 Multiplication

A. Properties of Multiplication
B. Mental Multiplication

1.4 Division

A. Properties of Division
B. Mental Division

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Chapter 2: Fractions

2.1 Multiplication of Fractions

A. Multiplication of a Proper Fraction by a Whole Number
B. Multiplication of a Proper Fraction by a Fraction
C. Multiplication of an Improper Fraction or a Mixed Number by a Whole Number
D. Multiplication of an Improper Fraction or a Mixed Number by a Fraction

2.2 Division of Fractions

A. Division of a Whole Number by a Fraction
B. Division of a Fraction by a Whole Number
C. Division of a Fraction by a Fraction

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Chapter 3: Decimals

3.1 Addition and Subtraction of Decimals

A. Structure of Decimals
B. Adding and Subtracting Decimals

3.2 Multiplication of Decimals

A. Decimal Number System
B. Multiplier and Product
C. Multiplying Decimals

3.3 Division of Decimals

A. Divisor and Quotient
B. Dividing Decimals

3.4 Metric Measurements and Decimals

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Chapter 4: Negative Numbers

4.1 Positive and Negative Numbers
4.2 Comparing Positive and Negative Numbers

A. The Number Line
B. Absolute Value

In A Nutshell
Write In Your Journal
Extend Your Learning Curve

Chapter 5: Ratios

5.1 Ratios and Equivalent Ratios

A. Finding Ratio
B. Equivalent Ratios

5.2 Ratios and Fractions

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Chapter 6: Rate

6.1 Average and Rate
6.2 Unit Rate
6.3 Speed

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Chapter 7: Percent

7.1 Meaning of Percent
7.2 Percentage of a Quantity

In A Nutshell
Write In Your Journal
Extend Your Learning Curve
Problem Solving Corner

Answers 

Click here to view Dimensions Math® Textbook 6A samples.

Dimensions Math® G6-8 Textbooks are designed for middle school students. Developed in collaboration between Star Publishing and Singapore Math Inc®, this series follows the Singapore Mathematics Framework and covers the topics in the Common Core State Standards.

The emphasis of this series is on empowering the students to learn mathematics effectively and independently. Depending on the topics covered, different approaches are adopted for the presentation of concepts to facilitate easy understanding by students to internalize concepts and instill in them an interest to explore the topics further.

Each book includes appropriate examples, class activities and diagrams to understand the concepts and apply them. IT skills and values are incorporated as appropriate.

Some features of this series include the following:

  1. Class activities which allow the student to learn mathematics through discovery. Some of the class activities make use of Geometer’s Sketchpad (available at keypress.com).
  2. Worked examples are followed by a similar question (Try It!) so that students can check if they have understood the concepts presented earlier.
  3. An exercise for each lesson including questions in the following sequence:
    • Basic Practice (simple questions involving a direct application of the concepts)
    • Further Practice (more challenging questions on direct application)
    • Maths@Work (questions that apply mathematical concepts to real-life situations)
    • Brainworks (questions involving higher order thinking or an open-ended approach to problems)
  4. Each chapter is followed by a review exercise; the Extend Your Learning Curve activity encourages students to explore mathematical concepts further or apply mathematics in real-life situations, with some questions requiring sentence or paragraph answers to encourage students to reflect on their learning experiences.
  5. The right margins contain remarks on important information, concepts or definitions covered earlier related to the current material to help students recall them, discussion questions, interesting puzzles or facts that are related to mathematics, and some website references.

The answer key at the back of the book provides answers to the Try It! and the problems in the exercises for the Basic Practice, Further Practice, and Maths@Work questions. It does not include answers to the class activities or the Extend Your Learning Curve activities. 

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SKU: 13482306205

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Mr. Stripey
Houston, US
★★★★★ 5
Informative studies of how scientists are trying to address environmental issues today
Format: Paperback
In this book Kolbert travels to visit scientists attempting to address the environmental changes that humans are creating on the planet. The chapters focus on different issues, such as invasive species, and species loss, and includes field site visits, and also references for more reading. If you read this, and Sixth Extinction, and Field Notes From a Catastrophe, you will get a great oversight of some of the environmental issues that we face, although not any neat solutions. All the case studies build up into a wider understanding.
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Reviewed in the United States on December 23, 2023
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Dave of Dublin
Birmingham, US
★★★★★ 3
disappointing
Format: Hardcover
I was excited to read "Under a White Sky". Unfortunately, it seems that the author just sort of stopped writing when COVID hit. See page 197, where author laments the arrival of COVID. FOur pages later, book ends. The author even says on page 197: "Here I was, trying to finish a book about the world spinning out of control, only to find the world spinning so far out of control that I couldn't finish the book". Couldn't finish the book, but COULD publish it and sell it to people like me. The early chapters are interesting, each one covering a different topic related to man messing with nature. Good stuff. But I expect some analysis, some conclusion, something to sum it all up. It just isn't there. Topic and early chapters showed great promise. But the ending is truly lacking. And as the author alludes, unfinished.
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Reviewed in the United States on March 7, 2021
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Immer
Waukegan, US
★★★★★ 4
As A Dominant Species, We Dance On The Razor’s Edge
Format: Hardcover
Under A White Sky Elizabeth Kolbert’s claim to fame is her book The Sixth Extinction. In comparison Kolbert’s under A White Sky is rather short and disorganized, yet her coverage of those working on solutions to Climate Change is pretty darn interesting.  In her conclusion, she writes, “This has been a book about people trying to solve problems created by people trying to solve problems.” Putting this sentence at the book’s beginning rather than buried at its end would have provided a reader a compass to help determine where Kolbert was going with her dialogue. As she wades through the reversed direction of the Chicago river; Asian carp; Cane toads; forced and accelerated evolution in regard to coral, in particular in regard to the Great Barrier Reef (without discussing the importance of the worlds reefs; the continual flooding of New Orleans both despite and because of the actions of The Army Corps of engineers, one begins to ponder a general connection that might exist, while the book itself is headed toward a two star rating. Then, Kolbert got to Global Warming and Climate science. The book’s last sixty pages are worth the complete price of admission. The chapter begins with carbon sequestration, the pros and cons of how it can be done, and does it also contribute to the growing problem. The stoppered bathtub” analogy is perhaps the best analogy I’ve heard in regard to the anthropocentric carbon dioxide problem on the Earth. The tub is full of water/ the sky’s CO2 level; the tubs stoppered, so the water isn’t going anywhere, and the atmosphere’s increased CO2 level won’t drop in the near future either; and even if the water flow to the tub is reduced, it will still accumulate until over flowing, as will reduced emissions continue to amass in the atmosphere. In a sense, we are already beyond the tipping point in terms of global temperature increase. Harvard University Center for the Environment director Dan Schrag says, “I’m a scientist. My job is not to tell people the good news. My job is to describe the world as accurately as possible.” He predicts, due to the fact that the oceans must equilibriate. “If we were to stop CO2 emissions tomorrow, which of course isn’t possible, it’s still going to warm for centuries. That’s just basic physics.” Thus enters the topic of geoengineering, and the connection with people trying to solve problems created by people trying to solve problems truly comes into focus. Kolbert , in a rather clandestine way connects the dots of her past “local problems”, but now the problem fix, if it doesn’t work could create problems beyond solving. She hits the nail on the head with this. Humans have been around 35-50 thousand years, but only the last ten thousand or so have they thrived, largely due to agriculture and differentiation of what one can do because of agriculture. But ag has only been able to thrive because of the rather consistent global weather of the past ten thousand years, due to glacial retreat. This has been presented in great detail by Jared Diamond in his book Guns, Germs, and Steel. The CO2 we’ve put into the atmosphere isn’t going anywhere, as we continue to pour more into the mix. Her interviews with climate scientists do not bode well for our species, as everything they think of to combat the CO2 conundrum brings more as the bathtub continues to fill. One could say humans have become victims of their own success as a species. Ultimately, one gets the feeling from Kolbert and her interviews, that the enormous fluctuations in the Earth’s climate over geological time, and those yet to come, render whatever we do as humans as a moot point. The Earth will shake is off as a dog rids itself of fleas. She also brings to the argument, when the blank really hits the fan, as it will despite, or because of any preventative efforts by man, the resulting population displacements will be staggering. A sobering, informative book as we, as a species, dance on the razor’s edge.
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Reviewed in the United States on September 24, 2021
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Christine Liu
Lexington, US
★★★★★ 5
fascinating and compellingly written
Format: Hardcover
Elizabeth Kolbert is one of my favorite nonfiction authors. She has such a knack for writing in a clear, compelling way that makes you think and marvel and ask questions you've never considered before. In her previous book, The Sixth Extinction, she catalogs all the ways in which humans have drastically changed the natural world, ushering the new age of the Anthropocene. Under a White Sky is an exploration of the ways scientists around the world are trying to undo those changes. There are people engineering unique solutions to combat a variety of environmental threats: invasive carp in the Chicago River and cane toads in Australia, Louisiana's rapidly disappearing Mississippi River delta, rare species that now depend entirely on human conservation for their continued survival, and, perhaps most pressingly, the problem of rising carbon emissions and global climate change. That there are brilliant minds working innovatively to solve these problems inspires optimism. But these sobering portraits really highlight the extreme human measures it takes to keep at bay the problems caused by humans interfering with nature in the first place. We've already transformed the planet; how much more will it be transformed by these interventions, and in what ways?
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Reviewed in the United States on March 11, 2021
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Carlos
Draper, US
★★★★★ 5
Exactly what I ordered
Format: Paperback
As described the book was in great condition and ut was delivered with care
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Reviewed in the United States on August 12, 2025

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