To redo the base 10 portion of the addition standard algorithm assignment, you must:
- write up an explanation of how to explain the standard algorithm by reasoning from the manipulative algorithm for the problem 458+394
- turn in your redone work with your original work so I know your original score on the problem.
Re-learning resources:
To redo the base 10 portion of the subtraction standard algorithm assignment, you must:
- write up an explanation of how to explain the standard algorithm by reasoning from the manipulative algorithm for the problem 923-368
- turn in your redone work with your original work so I know your original score on the problem.
Re-learning resources:
What I look for as I grade:
- Showing and explaining the manipulative step first
- Explaining in words how to write down the manipulative step results in numbers
- Not going on to the next step before the previous step is recorded
- Using place value language (eg. 4 tens + 8 tens = 12 tens)
- Using subtraction language correctly (take the subtrahend away from the minuend. eg. Take 3 away from 6, not take 6 away from 3).