Sink or Float


Our Sink and Float lesson plan teaches students the basics of why objects sink or float based on their density. Students practice predicting whether an object will sink or float and will be able to speak about density.


Our Sink or Float lesson plan introduces students to the concept of sinking and floating relative to an object’s density. During this lesson, students are asked to work with a partner to complete an activity in which they predict whether a given object will float or sink, put the object into water, and then record whether they were correct or not; they are then asked to draw the object and answer questions about their hypotheses. Students are also asked to tell whether each statement about sinking or floating is True or False.

At the end of the lesson, students will be able to define and distinguish the difference between sinking and floating, and predict and identify objects that will sink or float, and explain why.

Common Core State Standards: CCSS.ELA-Literacy.RI.1.9, CCSS.ELA-Literacy.RI.2.3, CCSS.ELA-Literacy.RI.2.4, CCSS.ELA-Literacy.RI.2.9, CCSS.ELA-Literacy.RI.3.3, CCSS.ELA-Literacy.RI.3.4, CCSS.ELA-Literacy.RI.3.9

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