Make the conjugation of -ER and -IR verbs a breeze with this fun and easy to understand Spanish I grammar lesson! This power point lesson clearly explains how to conjugate -ER and -IR verbs in the present indicative tense and has guided practice throughout the lesson. Acronyms are introduced to facilitate memorization of when to use the two verbs. Give your students nice, organized notes to refer back to all year! The lesson takes about 15-20 minutes.