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1voteA friend introduced this book to me. It's been a pretty good book with lots of resources for elementary and middle school math teachers.
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1voteThis is a german web site, but most of the given instructions are available in English. You can pick up great ideas to add some visual components to your lessons. You will find games, puzzles, ... Teacher and students will enjoy these projects.
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1voteThis links will show you only the website of the books publisher. Search for the author Enzensberger. Hans Magnus Enzensberger is a german professor for the didactics of mathematic and a fabulous writer and teacher. His book 'The number devil' is highly enjoyable for both, teachers and students. Every math teacher should read it, but you could also use excerpts of it for hooks in your lessons.
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1voteEnter the coefficients for the Ax2 + Bx + C = 0 equation and Quadratic Equation will output the solutions (if they are not imaginary).
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