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Lesson Plan
Curated OER

Sieve of Eratosthenes

For Teachers 8th - 12th
Students investigate numbers, ways of representing numbers, relationships among numbers and number systems. They comprehend the meaning of operations and how they relate to each other.
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Lesson Plan
Curated OER

Simultaneous Equations Using Elimination

For Teachers 9th - 12th
Students solve a system of two unknowns.  In the Algebra lesson plan, students use a on line computer applet/program to solve a system by the elimination method.  The student's work is self checking, giving immediate feedback.  The...
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Worksheet
Curated OER

Phone Button Boggle

For Students 7th - 9th
In this phone button boggle activity, learners identify the number of math words they can find on a phone keypad according to given directions.  This one-page activity contains one problem.  Answers are provided.
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Worksheet
Curated OER

Computations with Fractions Vocabulary Crossword

For Students 5th - 10th
In this fractions crossword, students fill in the blanks to the crossword with vocabulary words representing the computations of fractions. Students complete 17 spaces in the crossword.

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