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In December 2025, the Wisc-Online website will be retired. But don’t worry—the Wisc-Online brand and a collection of your favorite learning resources will live on at WisTech Open, Wisconsin’s new hub for open educational resources.

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Numerical Curiosities: Part 4

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In this fourth part in a series, learners follow the steps of the “mathemagician” to examine three numerical curiosities: Be a Psychic by Predicting Birthdays, Predict a Card with Mind Reading, and Predict the Three Die Values Your Opponent Has Rolled. Learners will also study palindromic numbers and look at two alphametric puzzles.

Inverse Variation

By Terry Lark

In this learning activity you'll practice calculating an inverse variation problem.
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The Regular Square Pyramid

By Allen Reed, Douglas Jensen

Learners study the properties of a regular square pyramid and use geometric formulas to find volume and surface area.
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The Cube

By Allen Reed, Douglas Jensen

Learners study the properties of a cube and use geometric formulas to find volume and surface area.

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The Sphere

By Allen Reed, Douglas Jensen

Learners study the properties of a sphere and use geometric formulas to find volume and surface area.
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Students read how to organize their work when multiplying more than two signed numbers. A review and practice problems complete the activity.
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Adding and Subtracting Signed Numbers

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AC Voltage Conversion Problems

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Total Impedance for Series-Parallel Circuits Using Complex Numbers: Practice Problems

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Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.
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Decimals and Percents

This game will give you an opportunity to practice what you have learned about decimals and percents.
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Rounding Flashcards G4

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Finding the Median

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