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:
1 Reading bar chartsLO: to solve a problem by organising and interpreting data in bar charts with intervals in ones and twos.
2 Look 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?
3 A 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.
4 Can 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
5 How can you collect the information needed to construct a bar chart? By making a tally chart first!
6 Flavour Tally Salt and vinegar Cheese and onion Prawn cocktail Ready saltedBaconWorcester sauceBarbequeInsert any other flavours here
7 Tables 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
8 Tables 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.
9 Pokémon card tally sheet Card type TallyShiny cardsEnergy cardsCharacter cardsTrainer cards
10 Table 5:Working in pairs, deal out 25 Jackie Chan cards and sort them into different types.Fill in the tally chart and create a bar chart to show card types in a typical deal.