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1st Grade Guided Math -Google Classroom Unit 1 Add Subtract Within 20


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This 1st Grade Guided Math Digital Companion includes sixteen digital math lessons on the topic of adding and subtracting within 20. These are digital lessons in Google™ Slides for use in Google™ Classroom.

These lessons are NOT included in the Guided Math units in my store. These are digital companions that you may choose to use along with the units.

In each lesson, students will read a few simple-to-understand teaching slides and then will answer ten problems. The teaching slides are helpful because they can explain the skill to your students in a simple way. The teaching slides are also helpful to any parent who is helping their child complete the assignment during distance learning. In the classroom, these digital lessons can be used as part of your instruction or as a digital center.

What’s Included:

  • Lesson 1: Tens Frame Make a Ten
  • Lesson 2: Add by Counting On (Within 10)
  • Lesson 3: Add Within 10 (Number Line)
  • Lesson 4: Subtract Within 10 (Number Line)
  • Lesson 5: Fact Families Within 10
  • Lesson 6: Add 10 to a Number
  • Lesson 7: Subtract 10 From a Number
  • Lesson 8: Add by Counting On (Within 20)
  • Lesson 9: Add Within 20 (Number Line)
  • Lesson 10: Subtract Using Pictures
  • Lesson 11: Subtract Within 20 (Number Line)
  • Lesson 12: 3 Addends, Making Ten to Add
  • Lesson 13: Add Doubles Within 10
  • Lesson 14: Add Doubles Within 20
  • Lesson 15: Add Doubles Plus One Facts
  • Lesson 16: Fact Families Within 20


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