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Dimensions Math Teacher's Guide 1B

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Dimensions Math Teacher's Guide 1BDimensions Math Teacher's Guide 1B Chapter 10: Length Teaching Notes Chapter Opener Lesson 1: Comparing Lengths Directly Lesson 2: Comparing Lengths Indirectly Lesson 3: Comparing Lengths with Units Lesson 4: Practice Workbook Solutions Chapter 11: Comparing Teaching Notes Chapter Opener Lesson 1: Subtraction as Comparison Lesson 2: Making Comparison Subtraction Stories Lesson 3: Picture Graphs Lesson 4: Practice Workbook Solutions Chapter 12: Numbers

Dimensions Math® Teacher's Guide 1B

Chapter 10: Length

Teaching Notes
Chapter Opener
Lesson 1: Comparing Lengths Directly
Lesson 2: Comparing Lengths Indirectly
Lesson 3: Comparing Lengths with Units
Lesson 4: Practice
Workbook Solutions

Chapter 11: Comparing

Teaching Notes
Chapter Opener
Lesson 1: Subtraction as Comparison
Lesson 2: Making Comparison Subtraction Stories
Lesson 3: Picture Graphs
Lesson 4: Practice
Workbook Solutions

Chapter 12: Numbers to 40

Teaching Notes
Chapter Opener
Lesson 1: Numbers to 40
Lesson 2: Tens and Ones
Lesson 3: Counting by Tens and Ones
Lesson 4: Comparing
Lesson 5: Practice
Workbook Solutions

Chapter 13: Addition and Subtraction Within 40

Teaching Notes
Chapter Opener
Lesson 1: Add Ones
Lesson 2: Subtract Ones
Lesson 3: Make the Next Ten
Lesson 4: Use Addition Facts
Lesson 5: Subtract from Tens
Lesson 6: Use Subtraction Facts
Lesson 7: Add Three Numbers
Lesson 8: Practice
Workbook Solutions

Chapter 14: Grouping and Sharing

Teaching Notes
Chapter Opener
Lesson 1: Adding Equal Groups
Lesson 2: Sharing
Lesson 3: Grouping
Lesson 4: Practice
Workbook Solutions

Chapter 15: FractionsTeaching Notes
Chapter Opener
Lesson 1: Halves
Lesson 2: Fourths
Lesson 3: Practice
Review 3
Workbook Solutions

Chapter 16: Numbers to 100

Teaching Notes
Chapter Opener
Lesson 1: Numbers to 100
Lesson 2: Tens and Ones
Lesson 3: Count by Ones or Tens
Lesson 4: Compare Numbers to 100
Lesson 5: Practice
Workbook Solutions

Chapter 17: Addition and Subtraction Within 100

Teaching Notes
Chapter Opener
Lesson 1: Add Ones — Part 1
Lesson 2: Add Tens
Lesson 3: Add Ones — Part 2
Lesson 4: Add Tens and Ones — Part 1
Lesson 5: Add Tens and Ones — Part 2
Lesson 6: Subtract Ones — Part 1
Lesson 7: Subtract from Tens
Lesson 8: Subtract Ones — Part 2
Lesson 9: Subtract Tens
Lesson 10: Subtract Tens and Ones — Part 1
Lesson 11: Subtract Tens and Ones — Part 2
Lesson 12: Practice
Workbook Solutions

Chapter 18: Time

Teaching Notes
Chapter Opener
Lesson 1: Telling Time to the Hour
Lesson 2: Telling Time to the Half Hour
Lesson 3: Telling Time to the 5 Minutes
Lesson 4: Practice
Workbook Solutions

Chapter 19: Money

Teaching Notes
Chapter Opener
Lesson 1: Coins
Lesson 2: Counting Money
Lesson 3: Bills
Lesson 4: Shopping
Lesson 5: Practice
Review 4
Workbook Solutions

Blackline Masters for 1B

Click here to view samples of Dimensions Math® Teacher's Guide 1B.

Dimensions Math® PreK-5 series features the progression, rigor, and pacing that define Singapore math. Throughout the series, five characters offer students suggestions on how to think about problems. They remind students of strategies they’ve learned and point out important information that encourages them to come up with their own solutions.

Textbook lessons begin with a task that allows students to apply their previous knowledge and learn through discussion. Once students have mastered a concept with the use of concrete and pictorial aids, they are ready to take on more abstract mathematical problem sets. They reach fluency by collecting various strategies along the way and applying them to new problems. Word problems give students a sense of math in real-world contexts. 

Workbooks offer independent practice that follows a careful progression of exercise variation. Each textbook lesson includes a corresponding workbook exercise that starts with pictorial representation and progresses to more challenging abstract problems. Workbooks for PreK-2 are perforated. 

Teacher’s Guides include lesson plans, mathematical background, games, helpful suggestions, and comprehensive resources for daily lessons. Lessons are laid out clearly and activities are designed for the whole class, small groups, and extension.

Textbooks and Workbooks do not include answer keys. Answers are in Teacher's Guides.
ISBN  9781947226333
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SKU: 60311739904

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My dogs LOVE this...and it lasted 5 minutes. I know they are aggressive chewers....but didn't last after a couple of minutes with it. (Delivered 4/28-- destroyed 4/28)
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Good quality, great for the beach
This is great for ocean and beach fetch! The spikes keep the sand and saltwater from getting in my pups mouth and upsetting her stomach. It also floats well and doesnt fill with water. I have had this for about a month now and in surprisingly good shape considering how obsessed with it my dog is. Not gonna lie, I avoid squeakers since my dog is an absolute menace with them but i assumed the squeaker would break almost immediately, however it is still going strong much to my annoyance🤣
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Kelsey
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The dogs like it very much, it produces a lot of noise.
Size: Large, Size: Large
I’m rating this based on my dogs’ response to this toy – they absolutely love it, and it has seen more use without damage than any of their regular throwing toys. At the same time, unless you enjoy, REALLY ENJOY the sound of crunching water bottles, you may not like having this ball in the house. Pros: The rubber outer shell of the ball is durable, and can survive both chewing and pulling forces (as a note, my dogs do not concentrate on chewing - they use it more for play games). It’s big enough for my dogs to play tug of war with it, hooking their teeth in the mesh, and they since it bounces around if they drop or kick it, it makes the game more interesting than rope. They did crush the interior plastic, but they don't really seem to care. It’s much more engaging than a normal ball, and can be modified to hold treats, sticks, rope elements and other external bits, which my shepherd mix loves; he gets bored easily and frequently, and this can actually entertain him. Cons: This toy is loud, and produces repetitive crunching sounds. It is apparently really engaging to chew, and my dogs will produce the horrid plastic crackling up to half an hour at a time. If you let your dogs in and out, it would make a fine outdoor toy, but since I have a dog door, it migrates around to pretty much wherever the dogs are. I kind of hate it, but will probably buy another if they break this one since they enjoy it so much.
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BakedN
Carnegie, US
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Very durable and my Heeler's fave inside toy
Size: Large
My red Heeler loves these balls, second only to Tennis balls but she destroys those within minutes and they are outside only. This is her inside ball. She is hard on toys and has the strongest bite of any dog I've had (shepherds, collies, weimaraners, retrievers, Labs) yet these continue to last. She catches the ball, we play tug of war with it (she places it in hand hand and pulls only when I have a firm grip, she shakes it and flings it. The rubber outside even outlasts the water-bottle like plastic piece inside. Steps holds the ball with her foot and pulls on the rubber with her mouth, stretching it to sometimes twice its size. I pull while shes pulling. This thing gets abused daily and keeps on going. Its the most used toy and she brings it to me to play with every day. Each ball lasts about 6 months before the inside ball is toast and the outer rubber is finally starting to tear/break. which for me in an incredibly long time. If this ball is available to play, she wants it over all others. Shes NEVER gotten a piece off to actually swallow and that alone is worth the price.
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David Fulford
Alexandria, US
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Good for price
Size: Medium
Good product, wish it was a little more chew resistant
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Reviewed in the United States on April 29, 2026

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