Numbers to 99

• Overview

• 1.4 Unit Overview
• The Collectors

• Pre-Unit

• 1.4 Pre-Unit Check

• Sub-Unit 1: Units of Ten

  Represent and use the base-ten structure of two-digit multiples of `10`. Add and subtract two-digit multiples of `10`.

• Investigate: Game Points
• Meeting Yara
• It’s a Match
• How Many Cubes?
• Boris’s Thimbles
• How Many Tens?
• 1.4 Sub-Unit 1 Quiz
• 1.4 Sub-Unit 1 Checklist

• Sub-Unit 2: Tens and Ones

  Understand that the 2 digits of a two-digit number represent amounts of tens and ones. Add two-digit numbers and multiples of `10`. Mentally find `10` more and `10` less than a two-digit number.

• Meeting Prashant
• Curioso Collections
• Do They Show the Same Number?
• Curioso Customers
• Connecting With Collectors
• Steph’s New Curioso Cards
• I See a Pattern
• 1.4 Sub-Unit 2 Quiz
• 1.4 Sub-Unit 2 Checklist

• Sub-Unit 3: Comparing Numbers to `99`

  Use place value understanding to compare 2 two-digit numbers, and record comparisons using the `<`, `>`, and `=` symbols.

• Steph’s Growing Collection
• Greater Than, Less Than
• Mystery Symbols
• Purr-fect Comparisons
• Steph’s Friends
• A Trip to the Flea Market
• 1.4 Sub-Unit 3 Quiz
• 1.4 Sub-Unit 3 Checklist

• Sub-Unit 4: Different Ways To Make a Number

  Create and interpret equivalent base-ten representations for two digit numbers that show different amounts of tens and ones.

• Kat’s Football Cards
• Collectors Everywhere!
• Collection Showcase!
• 1.4 Sub-Unit 4 Checklist

• End-Unit

• 1.4 End-of-Unit Assessment

• Resources

• Differentiation and Personalized Learning

• 1.4 Extensions