Kid President - How To Change The World with Kindness. Teaching kindness to children is part of the fourth National Health Education Standards: Students will demonstrate the ability to use interpersonal communications skills to enhance health and avoid or reduce health risks. Learning to be kind helps build a positive learning environment.
The stone-throwers took two forms-either like the arrow-firing apparatus or large one-armed catapults, known in the 4th century CE as the onager or 'Wild Ass' because of its terrific recoil but, in fact, first appearing in the 2nd century CE.
He designed the first sketch of a parachute in the mid 1480s (probably 1485), which is the first documentation of this idea in western history. However, the idea or using air resistance to slow a fall goes back much earlier. We can trace this principal back to the ancient periods of China.