Cleer and Lia make a chocolate cake for Mother's Day and share the recipe with us.

Cleer and Lida demonstrate how to book a hotel room.

Lida and Cleer teach us how to make a typical Colombian condiment, spicy aji.

Lida and Cleer teach us to make Colombian buñuelos, a type of fritter eaten particularly during the Christmas season.

Cleer and Lida teach us how to check in at a hotel including some pertinent questions to ask.

After not talking for a while, Lida and Cleer are excited to have a phone conversation and make plans to see one another.

Determined to look nice for her upcoming outing with Lida on Saturday, Cleer calls a beauty salon to find out what they have to offer and set up an appointment.

As Mary looks for ideas for her best friend's birthday celebration, perhaps the world of dinosaurs will serve as some inspiration.

These friends are still planning the perfect birthday party. We also heard some of the childhood traumas caused by the return to school

Mary continues with the preparation of her party, but has changed her mind about who to invite. Meanwhile, Juli resorts to a lie to avoid the pain of competing alongside her father.

See how students at the Rodríguez Casado de Palos de la Frontera Institute in Huelva, Spain learn to use the oil found at home to make biodiesel, an alternative car fuel.

In the second part of this series, we see the rest of the process of making the alternative car fuel, biodiesel, with some students from the Rodriguez Casado Institute in Palos de la Frontera, Huelva, Spain.