Incorporating prefixes into words can create new meanings, a concept these practice pages aim to teach children. By adding prefixes like "pre" to words such as "pay" and having students reflect on and write out the meaning of the resulting word "prepay," these exercises provide a hands-on learning experience.

The second-grade language standard L. 2.4.b emphasizes helping students expand their vocabulary knowledge. This standard explicitly encourages students to understand words that have different meanings depending on the context.

Understanding prefixes helps children decode unfamiliar words, enriching their vocabulary and boosting their confidence in reading comprehension. For instance, knowing that "un-" means "not" allows a child to understand that "unhappy" means "not happy."