The Tusi couple is a geometric mechanism introduced by the Iranian scholar Nasir Tusi in the 13th century. In this mechanism, a smaller circle rotates inside a larger circle whose radius is twice as big. If a small gear rotates inside a fixed larger gear, and we track the motion of a point on the edge of the smaller gear, its path will not be circular but will instead become a straight line. As a result, this mechanism produces linear back-and-forth motion from purely rotational motion. #mathema

Std 10 Maths Chapter 3 Pair of Linear Equations in Two Variables 🎯 | 8 Marks IMP | GSEB Board 2026

Some of these kids are genuinely addicted to social media. They also have to multitask and do multiple things at once because they require constant stimulation. The issue is that the multitasking means that their brain isn’t fully absorbing anything so when they’re completing work, watching YouTube, conversing with other kids, they’re not learning and they don’t finish their work. But if you tell them to focus on one thing or that they need to be working well before they can receive a privilege