Students practice changing adjectives to comparative adjectives in this helpful grammar worksheet! Comparative adjectives compare two things and will often end in -er. Geared toward third-grade learners, this practice worksheet begins with a helpful introduction to comparative adjectives and offers a few examples. Students are then asked to correctly complete eight sentences by changing the given adjectives to comparative adjectives. Learners are also asked to underline the noun that the adjective describes in each sentence. For related practice, have students complete the Fill in the Blank: Superlative Adjectives worksheet.