I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

👉 Learn how to find the domain of rational functions. Recall that the domain of a function is the set of possible input values (x-values) of the function. For a rational function, the denominator ...

PROTECTING THE U.S. ECONOMY AND NATIONAL INTERESTS: Today, President Donald J. Trump signed a Proclamation imposing a temporary import duty to address fundamental international payments problems and ...

Jonathan Kwan (@migrationethics) is the Inclusive Excellence Postdoctoral Fellow in Immigration Ethics with the Markkula Center for Applied Ethics. Views are his own. What term should we use to ...

The biggest harbinger that things were about to fall apart in Iran didn’t come from the thwarted anger of the country’s opposition or the frustrated hopes of young people hungry for more personal ...

Rail network operator ProRail has warned passengers to expect another two years of disruption after a record number of serious incidents this year. The total for 2025 has passed the threshold of 520 ...

The New York State Education Department is pushing new math guidelines, including a recommendation that teachers stop giving timed quizzes — because it stresses students out. The new guidelines also ...

At Gastech 2025, DNV awarded an Approval in Principle (AiP) to HD Hyundai Heavy Industries (HD HHI) for the design of next-generation LNG carriers (LNGC) and Very Large Ethane Carriers (VLEC) with ...

Interval-valued optimization problems constitute a rapidly evolving field in applied mathematics and engineering, addressing situations where uncertainty and imprecision are inherent in model ...

HIIT may offer the same health benefits as regular exercise in less time and help reduce body fat, heart rate, and blood pressure. It may even help improve blood sugar levels and insulin sensitivity.