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Multiply & Divide Integers Sort: Free Challenge

Want to give your students some additional practice with integers? This Multiply & Divide Integers Sort requires students to...

Key theorems about (learning) calculus.

Square Root Trick When the Number Ends with 25

Here is a square root trick when the number ends with 25 and the other numbers follow a specific pattern. For example, what is...

Expanded Form of a Number | Writing Numbers in Expanded Form

We know that the number written as sum of the place-values of its digits is called the expanded form of a number. Standard Form Expanded Form 20,37,81,405 = 20,00,00,000...

Logarithm

Logarithm of a number to a given base is the index or the power to which the base must be raised to produce the...

Shifted reciprocal conformal map

It’s interesting to visualize functions of a complex variable, even very simple functions like f(z) = 1/z. The previous post looked at what happens...