Here is a bar chart of the class's favourite ice-cream flavours. Which flavour was chosen by the most children? Which bar climbs the highest?
The answer chosen most often is called the mode.
Three charts on the board. On each one, look for the tallest bar and say which category it belongs to. On the last chart, watch for two bars that climb to exactly the same height.
Today we build and read three charts together. First we do favourite pets: cat, dog, fish and rabbit. Then we do favourite colours: red, blue, green and yellow. Last we build a chart where two answers tie. For each one, we set the bars from the class data, find the tallest bar, and name the mode out loud.
Look at the favourite break-time game chart on the board. In your maths copy, write the category that is the mode. Then write one sentence: "The mode is ___ because it was chosen most often."
Now we find the mode in data that gets trickier each time. First a bar chart with one clearly tallest bar. Then a set of favourite colours we read and name. Then a short set of shoe sizes we set and read. Last, a set where two answers tie for the top — so there are two modes.
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