Dictionary entries for third-declension adjectives can be disconcertingly terse. Learn that these adjectives are actually easier to decline than first- and second-declension adjectives that you have already learned. Apply your new knowledge by declining Catullus's phrase brevis lux (brief light) encountered in Lecture 12.

Having conjugated verbs, now learn to decline nouns. In this lecture, investigate the largest class of nouns, called third declension. Discover the function of the five cases and how to identify the noun stem. Then practice with masculine and feminine nouns.

Reap the rewards of your labors by reading and appreciating one of the most beautiful poems in Latin, which declares the poet Catullus's love for Clodia, whom he calls Lesbia to hide her identity. In the poem, encounter many of the grammatical forms you have studied so far.

Begin your adventure in Latin verbs with the third conjugation, practicing the present tense indicative of ago (I do). Learn the four principal parts of ago - the key words that allow you to conjugate any form - as well as the imperative endings that permit you to issue commands.

Consider the value of making a good first impression when you begin communicating with Spanish speakers. With this in mind, learn a group of effective "conversation openers," to engage with the person you're speaking to. Continue with a range of new vocabulary, and take a close look at the frequency and usefulness of cognates in Spanish - words that are the same as or similar to words in English.

Explore a subset of third-declension nouns that has the letter "i" in certain forms. Called i-stems, these endings closely resemble those for third-declension adjectives. Expand your grasp of Latin morphology and syntax by reading passages from Cato the Elder, an arch-traditionalist of Roman values.

Investigate the patterns that govern comparisons of adjectives and adverbs. Then try an example of authentic Latin text that speaks directly across two millennia: a heartfelt inscription on a Roman tombstone. Although in colloquial Latin, it is just as dense with meaning as the literary passages you have already read.

Improve your Spanish pronunciation by working with key vowel and consonant sounds that we may think are the same as English, but are in fact different. Continue with direct object pronouns (as in, "I see them."), and double object pronouns, where two pronouns occur within a sentence ("We send them to him."). Learn how to build skill with these vital elements of conversation.

Pronouns that introduce a relative clause are called relative pronouns. Investigate these valuable words, which unlock the doors to Latin prose and are unusually enjoyable to chant aloud. Experience relative pronouns in action by translating two extracts from Sallust's The Conspiracy of Catiline.

First, learn useful vocabulary relating to the kitchen and cooking. Then study grammatical constructions that use the present tense to talk about the past. Delve deeply into the preterite tense, which expresses past actions that are viewed as completed or ended. Sharpen your command of the preterite with key verbs such as tener (to have), ver (to see), dar (to give), and ir (to go).