From Ratio Tables to Double Number Line Diagrams

How much sugar is in one bottle? Pupils use double number line diagrams to determine the amount of sugar in a 1L bottle of cola. The teacher leads a discussion on ways that double number lines can be of assistance in solving a problem that may not be as apparent in a ratio table. 

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CCSS: Designed
Instructional Ideas

  • If the class is not familiar with double number lines, spend some time making sure they know how to use them
  • Bring in bottles of drinks that contain sugar and create problems with the specific amounts of sugar per bottle
Classroom Considerations

  • Individuals should be familiar with how to generate equivalent ratios
  • Resource is the 12th in a 29-part series

  • Includes blackline masters of double number lines
  • Contains an activity to review equivalent ratios
  • Provides scaffolding suggestions for struggling learners

  • None