Generative Adding Double Digits
Instructions
[1] Enter two double-digit numbers that are to be added together into the provided boxes.
2. Move the slider so that the two pictorial representations overlap.
3. If any of the shaded regions overlap, then there will need to be a carry. Move the units slider, if required, to carry 10 ones over to the tens columns. Move the tens slider, if required, to carry 10 tens over as a hundred.
4. Click the 'Reset' button to restart the process.
What is the sum of these numbers?
[2] Find a second sum of two numbers that gives the same result.
To discuss: How can you tell from the image that it is the same as [1]?
[3] Find a third sum of two numbers that gives the same result.
To discuss: What do all the images have in common?