1 Hook/ Attention Getter
Introduce the topic by showing a video of water bugs. How do you think that these water bugs stay on top of the water?
Take a quick survey on quizlet about their initial ideas of how water bugs stay on top of the water.
How do you think water bugs stay on top of the water?
a) They're so fast they can't sink
b) They don't stay on the water, they sink
c) The surface tension of the water holds them up
d) They are pulled upward by gravity
2 Direct Instruction
Introduce the idea of surface tension. Have students use Vocabla to record definition of surface tension: The skin-like surface that holds water together.
Use Vocabla to record and understand the definition of surface tension
3 Guided Practice
Introduce the penny activity. Demonstrate for the class how to set up materials. Explain process of dropping one drop of water at a time very slowly. Make sure to count how many drops fit on the penny before the water spills over.
Listen and watch attentively.