This is such a fun lesson for both students and educators. You will need container with water and objects (from the worksheet) that float and sink. First you can show the students the objects. As you present each one you can have them guess if it will float or sink. Children can practice saying “Flota” or “ Se hunde”. Then place in water . As you test out different objects in the water, you can put it in the correct (float or sink) column. And students can use the worksheet to record their re