Here is a tally chart you collected with the class earlier in this unit, and beside it a blank canvas with two empty axes. How would we turn this tally into a chart that tells the same story at a glance?
Display the class-commute tally (or any class survey on hand) beside the blank bar-chart canvas. Take two or three hands-up suggestions and revoice them, but don't draw any bars yet — building the bars is the next step.
Watch carefully as three finished bar charts appear on the screen. The same shape rules every time: categories along the bottom, frequency climbing the side, and one bar per category — taller for more, shorter for less.
Twelve walk, five cycle, eight come by bus, three by car. Notice that the 'Walk' bar is the tallest of the four because it has the biggest count.
Nine apples, seven bananas, four oranges, five pears. The chart sorts your counts into bars; the order of the bars matches the order on the x-axis.
Fourteen dog-owners, eight cat-owners — and now look carefully — three with fish, and three with no pet at all. The last two bars are the same height. We call those tied categories.
Walk the three examples one at a time. On the commute chart, point at the 'Walk' bar and say twelve pupils — the tallest bar. On the fruit chart, ask which fruit was second favourite? and check pupils read the height, not the position. On the pets chart, pause at the two tied bars: this is the lock-in moment — same height means same count, and that's fine.
Check labels aloud each time: categories on the x-axis, frequency on the y-axis. The next step asks pupils to come up and build a chart themselves, so name the parts now.
Now the class works through one chart together at the board. The categories are already in place along the x-axis: Walk, Cycle, Bus, Car. Read the tally aloud, then drag each bar up to its frequency. Read every height back before checking.
This round is for talking it through together — pupils take turns at the board and the class agrees or corrects out loud.
Use the school-commute tally from earlier in the unit (Walk 10, Cycle 4, Bus 7, Car 5 — different numbers from the Watch and Notice example, deliberately, so pupils build fresh rather than copy). Bring up four pupils in turn; the rest of the class calls out the target height before each one drags. Watch for the common slip: pupils reading the y-axis labels by position (the 4th line up) rather than by value (the line marked 4).
In your maths copy, sketch the bar chart frame. Draw a horizontal axis along the bottom and a vertical axis up the left side. Label the horizontal axis with the four categories from the tally we just built: Walk, Cycle, Bus, Car. Label the vertical axis with the word frequency, and number it up the side. Then draw each bar to the height that matches the tally count for that category. A bar chart without labels tells nobody anything — take your time on the axes.
Walk the room glancing at axis labels and bar heights — this is whole-class copybook practice, not marking. Pupils who finish quickly should check their axis labels: 'frequency' belongs on the y-axis; the categories are on the x-axis. Two minutes max, then back to the board.
Today's bank works through five charts of growing trickiness. The early ones are clean four-bar builds; later ones have tied categories and one needs an inferred missing bar. For each, read the label aloud, drag each bar to match, then tap Check.
This round is the practice bank — pupils take turns at the board, check each answer, and the class confirms before moving on. Keep the board work brisk rather than over-explaining.
Bank order: School commute and Favourite fruit are the warm-ups. Pets at home introduces tied categories — pause briefly and ask the class how can two bars be the same height? The Sport followed challenge has 30 as the total and asks pupils to spot the tied pair before they build. The final Connacht counties challenge is a clean four-bar build at slightly larger numbers — good for closing the round confidently.
Read each label aloud as it comes up so the class hears the category names (e.g. 'Walk, Cycle, Bus, Car') before any pupil drags. Common slip to head off: pupils miscount the y-axis when bars sit on every-other line. Pause and ask what does each line up the side mean? before they drag.
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