Problem Solving Plan, Estimation with Decimals: Shopping

Mathematicians go on a virtual shopping trip in an interactive designed to boost the concept of estimation. Scholars read and answer five questions—multiple-choice, true or false, and a discussion—with help from a drag-and-drop shopping spree of oranges, sweets, and watermelons. A discussion tasks pupils to think about when the best time to round numbers. 

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Discuss question five on a classroom blog, post the question and direct pupils to answer it using complete sentences and reply to at least one peer 
  • Assign the link as a May Do activity for early finishers to complete
  • Allow pupils to complete the interactive independently or pairs 
Classroom Considerations
  • A free CK-12 account is required to access the interactive 
  • Participants should know how to round decimals 
Pros
  • Questions are written clearly 
  • Barrels of food are labeled with each object's name and price 
  • The tool is easy to manipulate 
Cons
  • None
Common Core