I used a hemocytometer for counting cells.

Children often play counting-out games during recess.

There are different day count conventions used in financial markets.

You shouldn't count your chickens before they hatch.

She counts her blessings every day.

She is counting her blessings every day.

I can count on one hand the number of times I've been to the beach this year.

I can count on one hand the number of times I've been to the beach.

Counting on one hand, I can name all the countries I've visited.

She may seem quiet, but she's black where it counts.