My best lesson - Cause a ripple in science class with wave poetry

24th October 2014 at 01:00

When most students think about waves, they think about the sea. The challenge for a science teacher is to encourage them to consider other wave phenomena, too.

I start by getting students to come up with words associated with waves by writing a cinquain - a five-line poem. The first line is the one-word title (in this case "waves"); the second consists of two verbs; the third has three adjectives; the fourth, a four-word sentence; and the fifth line is one word summarising the poem. An example might be:

Rolling, spreading
Fast, high, long
Small ones are ripples

This activity gets students thinking about waves as being more than simply curls of water that can be used for surfing.

Next, I start building their knowledge of wave types. I hold up examples and ask, "What makes this a wave?"

You can make these very visual - for example, by showing light waves from a laser pointer and using talcum powder to make the laser visible. Students love this.

Then I take the class out to my "corridor of physics" and ask them to line up facing the back of the person ahead of them. I stand at the front of the line and ask the student behind me to copy my movements and the student behind them to copy them, and so on. We do a Mexican wave. Then I send four shapes down the wave, which spell out YMCA. Even young people in 2014 know this song.

Back in the classroom, we start a discussion about exactly how we can define a wave and the different types that exist.

Simon Porter teaches for international schools organisation Nord Anglia Education

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