Grade
5
Same & Different: Gazing at Arrays
Look at the two pictures. What do you notice?
![A: 384 divided by 12, modeled with base ten pieces (3 hundred-squares, 8 ten-strips and 4 units). Red linear pieces mark off the dimensions: 12 by 32. B: An open array model shows 12 by 30 and 12 by 2.](/sites/default/files/styles/large/public/inline-images/r9gzIXCKM7YbN8RwVsDj1Vb7qdbxhqMoGJ1kEY0Y5bphu6TWy4.png?itok=4Gx7Fv7z)
- How are pictures A and B mathematically the same, and how are they different?
- A and B are the same because …
- A and B are different because …
- Make a third picture of a multiplication or division model. Explain how your picture is the same as pictures A and B, and how it is different.
Printable Version
Google doc for printing and copying
Reference for Educators
Sample problems and solutions