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GEM Subject is
Mathematics -- Arithmetic
6 - 10
This unit from Illuminations includes three related mathematical lessons. The first lesson, "Number Representations," has students learn about converting decimal numbers to numerals. Students also learn about the...
Check That Digit
This lesson from Illuminations introduces modular arithmetic. The common barcode system, as used for UPCs and ISBNs, is discussed as an application of this type of arithmetic. The lesson also explains how modular...
Super Computation: An AHA Moment
In this interactive activity from Wisc-Online, the mathemagician will "magically" add numbers written on a virtual chalkboard. Students are challenged to figure out the mathematical "trick" that is being used in the...
Abacus: The Art of Calculating with Beads
The abacus has been around for several thousand years, and it is an efficient and interesting counting machine. The standard abacus can be used to perform addition, subtraction, division, and multiplication, along with...
Excel: Complex Addition
In this animated and interactive object, students view the steps for adding complex numbers in Excel.
2-4 Year College Students
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