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April 22 Math & Science Puzzle: First World-Wide Observance of Earth Day
April 22 Cover Image

April 22 Math & Science Puzzle: First World-Wide Observance of Earth Day

April 22 of the Mystery Year was the first worldwide observance of Earth Day. Skills in this cross-curricular warm-up activity are finding circumference of a circle, converting measurements, expressing a ratio as a unit rate in decimal form, prime numbers, and divisibility. 

Your Zip download includes printable/digital PDFs:
  • 1-page printable Student Puzzle
  • 1-page Answer Key with sample solutions
  • 1-page version of puzzle with expanding form fields – use with Acrobat Reader 
  • A complete file including the student puzzle, answer key, 3 pages of Teacher Notes including step-by-step Solutions, Extensions , Historical Notes, and a variety of professional development support.
  • 1-page How to Use History-Mystery Puzzles
PREVIEW FILE
Common Core Standard: 7.G.4, 5.MD.1, 7.RP.1, 7.NS.2.d
File Format: Zip and PDF
Your Price: $1.50