Sunday, 21 January 2018

The Piano Key Problem

I was watching a program about how a piano works earlier with my daughter. One of the facts was about the number of white and black keys. Wonder if children can use their reasoning skills (drawing a picture, making a model or looking for a pattern) to solve this:


On an 88 key piano, there are 52 white keys. How many are black? 
The lowest key (first note) is an A. The last note is C.How many A, B, C, D, E, F & G notes are there?

Here's the answer with a picture from

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