A prefix is a letter or group of letters added to the beginning of a word to make a new word.
A lot of words in English begin with the prefix ad-, which can mean adding something or moving towards something.
For example:
adverb
Advent (the time leading towards Christmas)
Another common prefix in English is al-, which means 'all' (but only has one 'l').
almighty
altogether
In this activity, you can practise reading and spelling words that begin with the prefixes ad- and al-.
View the activity introduction for more information on the topic
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Teacher explanation