This online lesson is on relative and absolute superlatives. The lesson is thorough and easy to understand, with ample examples. A short test at the end of the lesson tests the student's mastery of this grammar principle.

Side by side English to Spanish translations of comparatives and/or superlatives of adjectives, adverbs, nouns, and verbs. Other English expressions that may be confused with Spanish comparatives are also translated. Excellent reference...

This site contains 2 practice exercises over the formation and use of the superlative in Spanish.

Though no grammar explanations are provided, these self-correcting grammar exercises give students excellent practice with the comparative and superlative forms of Spanish adjectives.