Friday, July 1, 2011

Addition and Subtraction: Strategies (AC - EA)


AC - EA
ANIMATION: POP STICKS (MAKING GROUPS OF 10)

  1. The Number Partner
  2. Tutorial: "Learn how to break up numbers into pairs of smaller numbers."
  3. Tutorial: Make one of the numbers a ten.
  4. Tutorial: Use your doubles!  
  5. Tens and Ones + Ones (Enter your own problem).
  6. Tens and Ones + Ones (Solve the given problem).
  7. Tens and Ones + Tens and Ones (Enter your own problem).








Learn to subtract like a pro!  Jump back to the nearest 10...

Teach Me!
  1. Subtraction in parts: tutorial.
  2. Subtract the tens then the ones: tutorial (alternative strategy). 
  3. Subtract the ones then the tens: tutorial (alternative strategy). 
Practise!
  1. Easy take away: random questions.
  2. Easy take away: make your own.
  3. Hard take away: random questions. 
  4. Hard take away: make your own.




Use this tool to show jumps on a number line.


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