1. Lot of practice but a quick check
Stepping it up!
Lot of practice but a quick check

2. About the activity
This activity can be used to practice addition, subtraction and multiplication of whole numbers and integers
Can be used for fractions also – multiplication and division in particular
In each case some numbers will be given and the rest have to be computed
Number of rows can be extended beyond 4
This gives a lot of practice to the student
But the teacher can check quickly (of course after calculating all the way once)

3. The steps (or wall)

4. Addition Numbers in the last row are given
For integers, have a mix of positive and negative numbers and not all alternating
Each of the remaining cells will be the sum of the two numbers below
So students will be “stepping up”
Note that (for whole numbers) the top number will be quite large compared to those at the bottom
Only the top needs to be checked 

5. Addition
5 + 6
8 + 5

6. Subtraction
This is the reverse of the addition steps i.e. once filled it should resemble addition steps
To get each number, subtract the known number beside from the one above
Setting it up for whole number requires some considerations to avoid negative numbers (next slide)
No such issue arise for integers 

7. Subtraction Start at the top
Then fill any one cell below if with a number < ½ previous number
Fill any one cell below the last number such that
new number < ½ previous number
Keep going till you reach the bottom-most row
This is to avoid negative numbers
For integers, no such consideration is needed

8. Subtraction
21 < 43/2
9 < 21/2
3 < 9/2

9. Subtraction 43 – 21 21 – 9 Students will go top down
Topmost number – number below = number of empty cell
Similarly keep going to fill all empty cells
Teacher will have to check the numbers
at either end of the bottom row only
43 – 21
21 – 9

10. Multiplication This is similar to addition i.e.
Numbers at the bottom are given
Each of the remaining cells will be the sum of the two numbers below
So students will be “stepping up” again
Since the products will get significantly bigger, it is good to have only single digit numbers in the bottom row
This should be given only after students have learnt muti-digit multiplication
For integers, have a mix of positive and negative numbers and not all alternating

11. Multiplication
30  66
5  6
1980
6  11 30 66

12. Division This will be the reverse of multiplication
This can be done by setting the bottom, working up and then erasing all but one number in each row
But that needs prior preparation
For fractions however no such consideration is needed 

13. Division
 600
756000
600
1260
1260  30 30 42 5