Students explore microbes, their roles in ecosystems, and their effects on daily life. They describe processes, compare helpful and harmful effects, and discuss information from scientific readings.
Practice: Vocabulary, grammar, reading comprehension, and discussion.
Vocabulary: microorganism, microbiology, reproduce, cell.
Grammar: Use the third conditional: if + past perfect, would have + past participle.
Word study: The directional suffixes -ward and -wards, as in upward, homeward, and afterward.
Reading & speaking: Read about microorganisms; compare their roles and discuss how microscopic life affects the world.