Practise and practise are often used incorrectly in written English. Native speakers often confuse the two different spellings of this words, but the difference is quite simple: in British English practice is a noun and practise is a verb; in American English practice is both. Let's take a closer look. Remember to practise in the exercises.
In American English, practice is always spellt with a c. Regardless of whether it is a verb or a noun.
Tessa has softball practice on Tuesdays and Thursdays. (noun)
If you want to improve, you have to practice every day. (verb)
In British English, practice is spelt with a c when it is a noun.