Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

This section focuses on the key features and methods for working with linear graphs. It demonstrates how to sketch graphs from rules, derive rules from graphs, and calculate key features such as the ...

Our teacher already knows there is a positive relationship between how much time was spent on an essay and the grade the essay gets, but we’re going to need some data to demonstrate this properly.

The future of math education will begin with the divorce of a very long-term marriage between math learning and grade-level instruction. “The Future of Math,” my chapter in School Rethink 2.0, ...

The future of math education will begin with the divorce of a very long-term marriage between math learning and grade-level instruction. “The Future of Math,” my chapter in School Rethink 2.0, ...

Linear functions are used to model a broad range of real-world problems. The ability to solve linear equations and inequalities is an essential skill for analysing these models. This section covers ...

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Students graph linear equations in Zach Loy’s ninth-grade algebra class at Braham Area High School in Minnesota. Credit: Patience Zalanga for The Hechinger Report The Hechinger Report covers one topic ...

A seasonal index is a way of measuring the seasonal variation -- that is, to measure the change that is due to seasonal changes in demand -- of a variable, typically sales. For example, a beachfront ...

Abstract: Field emitters are often analyzed by linear fitting of a Fowler-Nordheim plot. The fitted slopes and intercepts can show a strong correlation, but its origin remains unclear. We propose a ...