May 3, 2021Suggested time: 50-60 minutesOverview The students will learn about the bases of water´s superficial tension and elasticity of materials by doing trials, and at the end they will apply all the things that they have learned by doing a fish that moves with a mechanism made with recycled materials.Materials •       2 plastic bottles•       Foami •       Scotch tape•       Wooden sticks •       Wooden popsicle sticks •       Silicon •       Scissors•       Rubber bands•       Needle •       Toilet paper•       Cup of wáter Multimedia ResourcesLearn about superficial tension (1:30 – 2:02) https://www.youtube.com/watch?v=JZA_NV8I5y0