The activity planned to teach and practice new vocabulary with students consist in several phases or stages that are the following:

1^st Stage - Activating prior knowledge: The teacher will play the videos from https://www.youtube.com/watch?v=ki4O-Fy3z-0 (matter)

 and https://www.youtube.com/watch?v=Q0LBegPWzrg (energy).

The teacher will provide to students with a list of words/phrases to be used in the lesson (matter, energy, states of matter, thermal, hydraulic, mechanical, nuclear, chemical, electromagnetic, sonic, gravitational, kinetic, potential, solid, gas, plasma, liquids). Then, the teacher will ask students to form groups of 4 in order to define the words in their own words (1-5 words per definition).

2^nd Stage - Practicing and learning vocabulary: The teacher will provide to students with cardboards, they will be required to divide the cardboards in fourths. The students will work in groups and will have to create cards, in the back side of the cards they will have to draw numbers. In the other side of the card, they will have to write the terms given by the teacher as vocabulary. When they finish the cards, the students will do something similar to the cards but now they are going to write the definitions of the words. Every group will have the same words but different definitions. The teacher will paste the cards on the board so that the board will be full of cards (because of the amount of words and students). The students in groups will participate in a contest to get extra points, they will have to find the word and the definition by selecting cards by their numbers. In this way, the students practice, learn and reinforce the new vocabulary.