As you can observe, there is no difference between the first two ways of writing this rhythm.

The results are identical and no mistake is made by writing in one manner or the other.

The third way of writing, on the other hand, shortens the first note.

Yet, in many circumstances, you would hear little difference, mostly if the tempo is fast.
Ties are most often used to pass over a bar line.

The fact the same rhythm can be written in different manners makes reading them back harder.

It is best to get used to reading them all, even if some seem easier

There are two ways to perform the exercises:

•Vocally: Using the syllable "Ta" (recommended).

•Manually: Using your hand, finger, nail, a pencil or a stick.