The Gases in Air

We breathe oxygen, yet it is only 21 percent of what is in our air. The four gases found in air each have their own chemical formula and abundance. Increasing in difficulty, four puzzles review these properties.

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CCSS: Adaptable
Instructional Ideas

  • Use as a review before a test
  • If pupils struggle with the content or have anxiety, use the PDF version, which doesn't have a time limit
Classroom Considerations

  • Relies on prior knowledge of how to solve Sudoku-style puzzles
Pros

  • Works well in traditional or flipped classrooms
  • Includes an answer key
Cons

  • None