Students explore problem solving strategies. Gin a novel situation, students develop a mathematical theory. Through models and mathematics, students justify their solution. Students definea V-sets and discuss conjectures about each set.
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Imaginary Numbers Are Real (Part 4: Bombelli's Solution)
Is the square root of negative one crucial to the process of finding other solutions? Using the properties of the newly discovered square root of negative one, historical mathematician Bobelli is able to solve Cardan's problem. His...
3 mins 9th - 12th Math CCSS: Adaptable
Imaginary Numbers Are Real (Part 3: Cardan's Problem)
Were complex numbers discovered or invented? A video presentation makes the case for the discovery of square roots of negative one. In order for complex numbers to be real, then they must behave like other numbers, which they do in terms...
5 mins 9th - 12th Math CCSS: Adaptable
Imaginary Numbers Are Real (Part 9: Closure)
The last video in a series about imaginary numbers demonstrates the need for complex numbers. Math pupils learn that they need to include the square root of negative one, the building block of the complex numbers, to have a set of...
6 mins 9th - 12th Math CCSS: Adaptable
Multiplying and Dividing Negative Numbers
Ease your class into pre-algebra with this video, which demonstrates multiplication and division problems involving negative numbers. Sal reiterates the rules of positive and negative numbers in different types of equations, then goes...
9 mins 7th - 9th Math