Today, we learned about wind power: 

"Wind energy is the movement of air, harnessed to produce electricity or power machinery. Wind energy has been used to pump water for centuries, and wind farms have powered generators for years. At this wind farm near Wasco, Oregon, United States, a windmill drives an underground water pump, while wind turbines drive generators to feed the local electricity grid."

In terms of grammar, we learned about the indefinite articles (a, an) and the definite article (the). Moreover, Ryan learned the difference between the grammatical terms singular and plural and he applied this knowledge to the demonstrative pronouns that, this, those, and these. 

The homework is below: