Math · Stage 5

Draw and interpret line graphs; find the mode; compare data with dual bar charts

Three data power-moves: read a line graph's rise and fall over time, find the mode (the value that turns up most), and set two groups side by side on a dual bar chart to compare them.

✦ Math📘 Stage 5 · S5⏱ ~10 min🧒 Ages 9–10★ Free to start

I can draw and interpret line graphs, find the mode of a data set, and compare two groups with dual bar charts.

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Kavi's Data Detective Case 📈

Kavi had three mysteries to crack! "A line graph shows how something changes over time — I read the rise and the fall," hooted Kavi. "The mode is the value that shows up the most, and a dual bar chart puts two groups side by side so I can see who is ahead. Read the scale first, then the data gives up its secrets!"

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What your child will learn

1A line graph shows change over timeA line graph joins points with a line so you can see how something changes over time. Read time along the bottom and the value up the side. The line going up means it grew, going down means it fell, and flat means it stayed the same. The steepest part is where it changed fastest. Tap each line to hear it.

2The mode is the value that appears mostThe mode of a data set is the value that appears the most often — not the biggest and not the middle, just the most common. Count how many times each value turns up, then pick the one with the highest count.

3A dual bar chart compares two groupsA dual bar chart draws a pair of bars — one for each group — above every category, so you can compare the two groups at a glance. Read the number on top of each bar, then compare the pair. Here are the totals for two classes.

4One smart move for each displayEach question has a smart move. Match the question to the move, then read the data carefully.

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A peek inside

A line graph of a puppy's weight reads: week 1 = 3 kg, week 2 = 5 kg, week 3 = 8 kg. By how much did it grow from week 1 to week 3?

end − start: 8 − 3

Try this at home: Line graph: a plant is 2 cm on Mon and 9 cm on Fri. Did it grow or shrink, and by how much? __

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Start the free interactive lesson, or print the handout for screen-free play.

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Part of Math · Stage 5 · S5 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.