Bar charts and line graphs

Hello, and welcome to Myriora Maths! Charts turn numbers into pictures, so you can see the story at a glance. Let's learn to read bar charts and line graphs.

In a bar chart, the height of each bar shows how many. Read across from the top of the bar to the scale on the side. This bar reaches twelve.

Check the scale! Here each line on the scale is two, not one. A bar halfway between ten and twelve is eleven.

A line graph shows how something changes over time. This one shows the temperature through a day. It rises in the morning, peaks at two o'clock, and falls in the evening.

You can read between the points too. At ten o'clock, halfway between nine and eleven, the line shows about twelve degrees.

Let's try one together. On the bar chart, which fruit got the most votes? Say it out loud!

The tallest bar is apples. So apples got the most votes!

Here's a question that catches lots of people. This bar is between the lines for ten and twelve, on a scale that goes up in twos. Some people count the lines, and say six. But each line is worth two! The bar is at eleven.

Your turn! At what time was the temperature highest? Pick the right card. You've got twenty seconds, or pause the video. Go!

Time's up! The highest point of the line is at two o'clock!

Quick review. In a bar chart, read across from the top of each bar. Always check what the scale goes up in. A line graph shows change over time, and you can read between the points. See you next time!