Turning words into symbols is a powerful way to use mathematics. A direct video lesson presents several word problems requiring an algebraic expression. After defining the variable, the presenter shows how to write an expression representing the contextual situation.

Concepts

algebraic expressions, expressions, writing expressions

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Additional Tags

math

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Instructional Ideas

• Pause the video after the presentation of each example; challenge pupils to try the problem before continuing the video
• Have pairs craft a word problem for their partner to write as an expression
  

Classroom Considerations

• Requires Internet access if requiring independent viewing of the video

• This video is hosted on YouTube

Pros

• Includes explanation of background knowledge necessary for understanding
• Presents the solutions using a methodical procedure

Cons

• None

Common Core

SL.6.2 SL.7.2 SL.8.2 RST.6-8.7