Test yourself using the Listen and Spell test.
If you can hear the sound /ar/ in a word, the spelling is nearly always ar. As you go through this list of ar words, say each word aloud and listen to the vowel sound.
"I have just subscribed and look forward to continuing to use Spellzone. I have been really impressed with the program during the trial period and the students gave very positive feedback. Many thanks."
Teacher, International School, Geneva