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University of Vienna (Austria)
University of Vienna: Elementary Properties of Numbers
Quick interactive assessment which determines skill level on fraction equivalence, prime factorization, and common divisors/multiples.
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.
Better Lesson
Better Lesson: Unit Review
What have students learned over the course of Unit 1? Students apply their knowledge of multiples, factors, order of operations, and equivalent expressions to review for the unit test.