Multi-Digit Subtraction

Activities

• Introduce Skill
  • While preparing myself for teaching/introducing today’s skill I view a short tutorial from Khan Academy.
  • Basic regrouping when subtracting
  • I bring the students to area of the room where I can use the whiteboard and they can gather with their whiteboards.
  • I introduce their ‘I Can’ statement for today.
  • I can subtract multi-digit numbers.
  • As a group we go over the skill and practice it on our whiteboards.

• Partner Practice
  • Students work with a partner to practice their skill.
  • Students play Multi-Digit Subtraction Battle
    
    • Students should be using a three number flip subtract a two number flip. 

• Independent Practice
  • Students work on the worksheet on their own. 
  • Multi-digit Subtraction.pdf

• Check-In
  • The students and I review the worksheet from the previous activity.
    • I go over the first few problems with the students.
    • Then one at a time I have students take turns explaining the remainder of the problems. 

• Interactive Practice
  • The students work in groups to practice their skill on an online interactive. 
    • Ghost Blasters III

Generally the purpose of classroom computation isn’t quantity, it is quality with a focus on explaining the strategies used and how/why it is true. However, the purpose of targeted skills practice includes fluency, as well as additional review to build comprehension.  I am looking for the student to demonstrate their fluency on this skill by completing the assessment with very few errors and within a reasonable amount of time.  The assessment is meant to be completed in approximately 15 minutes.