Filling rectangles with same-sized squares

The first instance of  is under the Early Math Math Mission. This exercise fills in a rectangle with smaller squares and introduces the idea of an area model for multiplication.

Types of Problems
There is one type of problem in this exercise:


 * 1) Determine how many squares it will take to fill: This problem has a rectangle drawn and the length and width are cut into smaller squares. The student answers the number of little squares it would take to completely fill in the rectangle.Fillsq.png

Strategies
This exercise is medium to attain both accuracy and speed badges especially on the pictures that have above five squares. It takes a bit of care to figure out how many there are along a side and it is easy to miss one if you go through it too fast.


 * 1) Testing indicates that counting vertically first, then horizontally seems to allow fast counting.
 * 2) The number of squares needed will be the product of the length and width.