An interactive challenges mathematicians to round large numbers with help from a large scale that measures the weight of a blue whale. The practie's five questions include multiple-choice, fill-in-the-blank, true or false, and an open discussion. 

Concepts

rounding, rounding numbers, rounding whole numbers, large numbers, numbers, whales, blue whales

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Additional Tags

math

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Instructional Ideas

• Combine subjects math and science then assign the interactive as a May Do activity 
• Assign the interactive during math center rotations, have the page bookmarked or already opened to make access easier 
• Send the link home for additional practice outside of school 

Classroom Considerations

• A free CK-12 account is required to complete the interactive 
• Learners should be familiar with rounding large numbers 
• Scratch paper is needed to solve some equations

Pros

• The dial on the scale emoves easily 
• Answers are graded rapidly
• Hints and helpful information is provided 

Cons

• None

Common Core

4.NBT.A.3