Presentation on theme: "Reading bar charts LO: to solve a problem by organising and interpreting data in bar charts with intervals in ones and twos."— Presentation transcript:
1Reading bar chartsLO: to solve a problem by organising and interpreting data in bar charts with intervals in ones and twos.
2Look at the way a bar chart is constructed Look at the way a bar chart is constructed. Can you name its different parts?What goes here?What is this called?What is this?What do we call this?
3A bar chart always has a title. Vertical axis (y). Always labelled and numbered.The height of the bars show how many of something was scored/recorded.Horizontal axis (x). Always labelled.
4Can you read the answers? What does this bar chart show?How many children were surveyed?Which is the favourite flavour?Which is the least liked?What intervals are used on the y axis?What intervals could you use if twice as many children were surveyed?Can you read the answers?Favourite Crisps8765Number of children4321Salt and vinegarCheese and onionPrawn cocktailReady saltedBaconWorcester sauceBarbequeFlavours
5How can you collect the information needed to construct a bar chart? By making a tally chart first!
6Flavour Tally Salt and vinegar Cheese and onion Prawn cocktail Ready saltedBaconWorcester sauceBarbequeInsert any other flavours here
7Tables 1 and 2:Working in table groups, survey all the children on your tables using the tally chart template. Find out THEIR favourite crisps.Then working in pairs, construct a bar chart showing the favourite crisps in our class.With support
8Tables 3 and 4:Working in threes, shuffle and then deal 30 Pokémon cards. Sort into card types.Fill in the tally chart and draw a bar chart showing card types in a typical deal.