Session 6 — Charts & Graphs

Duration: 60 min · Format: live online · Ages: 8–11

Session goal: by the end, students can read a bar chart and a pictograph, make a chart from their own data, and instantly spot the biggest and smallest.

Before class — prep (5 min)

• Have the charts diagram below ready to share on screen (fruit data as a bar chart and a pictograph).
• Open Google Sheets in a tab — you'll demo Insert → Chart.
• Ask students to have their tally sheet from Session 5 plus paper, pencil, and colours ready.

Agenda

0:00 · Hook (5 min)

Ask the class and take a few answers (chat or unmute):

• "Which is faster to understand: hearing the sentence 'apple 5, banana 7, grapes 3' — or seeing a picture of it?"

Let them vote, then reveal: a good chart tells the answer in one glance. Tell them that today they turn their own data into charts.

0:05 · Teach — A chart turns numbers into a picture (12 min)

Explain: the same fruit data can be drawn two ways. Share this diagram:

• Bar chart: the taller the bar, the more votes — super quick to compare.
• Pictograph: each little icon = one vote — just count the icons.

⚠ Watch for the pictograph trap: students may forget that one icon = one vote. If icons ever stand for more than one (say each icon = 2), counting icons the usual way gives the wrong total. For now, keep it one-to-one.

Ask: "In one glance — which fruit is the winner? Did you even need the numbers?" (Answer: banana; no — the picture shows it instantly.)

0:17 · Teach — Reading a chart like a pro (13 min)

Explain: teach students the three questions to ask about any chart. Write them on your shared screen:

• What is it about? (the title)
• Which is the biggest? The smallest?
• How much bigger is the winner than the rest?

Demo by pointing back at the fruit chart and answering all three aloud: it's about favourite fruit; banana is biggest, grapes smallest; banana beats grapes by 4 votes.

Ask: "If a chart had no title, what would be hard about it?" (Answer: you wouldn't know what the numbers are about.)

0:30 · Activity — Chart your survey (18 min)

Have students turn their Session 5 tally sheet into a chart.

1. On paper: draw a line at the bottom. For each choice, colour in one box per vote to make bars.
2. Or on the computer: open Google Sheets, type the choices and counts, select them, then Insert → Chart.

Demo the Sheets path on screen once, then let students work. Circulate (or invite a few to share): check that every chart has a title and that the bars/icons match their tallies.

Debrief: "Now your data has a face — you can see the winner without reading a single number."

0:48 · Check for understanding (7 min)

Ask these aloud or drop them in the chat. Answer key (for you):

1. In a bar chart, what does a taller bar mean? → More — a bigger count.
2. In a pictograph, what does one icon usually mean? → One of something (one vote / one item).
3. Why do we use charts at all? → To understand data fast — a picture is quicker than a list of numbers.

0:55 · Wrap-up + homework (5 min)

• Ask one student: "Bar chart or pictograph — which do you find easier, and why?"
• Homework — One-glance race: make two charts of your survey data (a bar chart and a pictograph). Then ask someone to flash a chart at you for just 2 seconds and shout the winner — proof that charts are fast! Bring both charts to Session 7.

Teaching notes

• Correct this misconception: "you always still need the numbers." A well-made chart shows the biggest and smallest at a glance — that's the whole point.
• Fast finishers (extension): teach cleaning — real data has mistakes, so hunt for empty answers, spelling slips (banana vs Banana), and doubles. Then ask the data questions with Sheets formulas — this is called Exploratory Data Analysis (EDA):

=SUM(B2:B4) → the total votes =MAX(B2:B4) → the biggest count =AVERAGE(B2:B4) → the average Challenge: find the most common answer and the average, and write one sentence about what they notice. - Low-tech fallback: if devices are limited, skip Sheets — the coloured-box bar chart on paper works for everyone; screen-share the Insert → Chart demo yourself.

Vocabulary

Resources

• Google Sheets — type data, then Insert → Chart.
• Our World in Data — beautiful real charts to explore.
• Kids' Zone — Create a Graph — a free, fun graph maker.

Next session

Session 7 — Data Solves Problems: students use data to make real decisions and design a simple solution.