Sixteen pupils chose football. One picture for each pupil would make a very long row across the board.
What if one picture meant two pupils instead? How many pictures would we need for those sixteen votes?
Take a quiet moment to think. You do not need to be sure yet.
Look at the key under each pictogram: 1 symbol = 2. A symbol is a picture, so each picture stands for two votes. Sixteen votes need only eight pictures.
Count the pictures in each row in twos to find how many votes it shows.
Now look at an odd total. Six votes are three full pictures. One more vote makes seven. A full picture already means two, so we only draw half a picture for that leftover one.
Let's build some rows with the key one picture = 2. Each press of + adds one vote, which is half a picture, so two presses make one whole picture.
We will show 6, then 10, then 4, and finally 9, which needs a half picture. Before each row, say how many pictures it will take.
In your maths copy, write the key: one picture = 2.
Write it carefully so you can use it when you build pictograms later.
Four new rows, one at a time, with the key one picture = 2. Read the votes above the chart and say how many pictures the row will need. Then press + once for each vote and press Check.
The last one, 7, needs a half picture.
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