Objectives (5 - 7 minutes)

1. Introduce the concept of prefix and suffix in a playful and interactive way, allowing students to understand and identify these parts of a word.

2. Familiarize students with how a prefix or suffix can alter the meaning of a root word.

3. Develop the ability to analyze and decompose words into their constituent parts, which is a fundamental aspect for the understanding and proper use of the Portuguese language.

Secondary Objectives:

• Stimulate collaboration and teamwork through group activities that promote discussion and joint problem-solving.

• Encourage creativity and oral expression through activities involving the creation of words with prefixes and suffixes.

Introduction (10 - 15 minutes)

1. Content Review: The teacher starts the lesson by reminding students about the concepts of syllable and word. He can ask students to identify the number of syllables in a word, or even propose a crossword puzzle game where they have to complete words. This activity aims to arouse students' interest and prepare them for the introduction of new concepts.

2. Problem Situations: The teacher proposes two problem situations that require knowledge of prefixes and suffixes. The first situation could be: 'If the word 'feliz' has the suffix 'iz', what would happen if we changed the suffix to 'in'?'. The second situation could be: 'If the word 'amigo' has the suffix 'o', how can we transform it into a feminine word?'.

3. Contextualization: The teacher explains to students that prefixes and suffixes are like small pieces of words that can be added to a root word to change its meaning. He can give concrete examples, such as the word 'desligado', where 'des' is the prefix indicating negation, and 'ligado' is the root word. Or the word 'amiguinho', where 'inho' is the suffix indicating diminutive. The teacher can also mention that the ability to identify and use prefixes and suffixes is very useful for reading and writing, as it helps us understand the meaning of new words.

4. Capturing Students' Attention: To arouse students' interest, the teacher can introduce the topic with some curiosities. For example, he can say that the word 'desodorante' has three prefixes ('des', 'odor', and 'ante') and one suffix ('nte'). Another curiosity is that in some languages, like English, prefixes and suffixes are much more common than in Portuguese, and many words are formed only by these parts (like 'unhappiness', which is formed by the prefix 'un', the root word 'happy', and the suffix 'ness').