Data and chance
I can read tables and graphs, use chance words and find the mode.
For grown-ups: this lesson in words
Ages 7 to 11 · Maths
Data and chance: I can read tables and graphs, use chance words and find the mode.
Our class collected bottles to recycle. On Monday we collected 10 bottles.
On Tuesday we collected 5 bottles.
On Wednesday we collected 15 bottles. That is the most.
Tuesday has the fewest. These counts are our data.
Picture: Monday: 10 plastic bottles, Tuesday: 5 plastic bottles and Wednesday: 15 plastic bottles.
Here is the same data as a pictogram. The key says each bottle picture stands for 2 bottles.
Monday is 10 bottles. Count in 2s to 10: that is 5 pictures.
Tuesday is 5 bottles: 2 pictures for 4, and half a picture for 1 more. Half of 2 is 1.
Wednesday is 15 bottles: 7 pictures for 14, and half a picture for 1 more.
Picture: A pictogram called "Bottles we recycled". Each plastic bottle stands for 2. Monday: 10; Tuesday: 5; Wednesday: 15.
Here is the same data as a bar graph. The scale up the side goes up in 5s.
Monday is 10, so its bar goes up to the 10 line.
Tuesday's bar goes up to the 5 line. Wednesday's goes up to 15, so it is the tallest bar.
15 − 5 = 10
Picture: A bar graph called Bottles we recycled. The scale up the side goes 0, 5, 10, 15. Monday: 10; Tuesday: 5; Wednesday: 15.
Your turn: This bar graph shows the birds at our feeder. The scale goes up in 2s. How many birds came on Wednesday?
Picture: A bar chart called "Birds at our feeder". The side says "Number of birds". Monday: the bar reaches the 8 line; Tuesday: the bar reaches the 4 line; Wednesday: the bar reaches the 6 line.