Gunpowder Gunpowder was invented around 850 A.D. The Chinese used gunpowder in the early 1230's to launch fireworks and in weapons. Gunpowder was probably used for the first time in Europe during the Battle of Cr cy in 1346.Historians do not know if this invention was carried from China to Europe or in The Europeans invented it independently.he Chinese used gunpowder in the early 1230's to launch fireworks and in weapons. Gunpowder was probably used for the first time in Europe during the Battle of Cr cy in 1346. Historians do not know if this invention was carried from China to Europe or in The Europeans invented it independently.
Best Answer: A child can be professionally diagnosed with dyslexia as early as five-and-a-half years old. ... Of course, like most, there is quite a range. but it ...
Among children in U.S. public schools, three in 20 receive special education for reading problems; 3 to 5 percent of those kids most likely have dyslexia. Boys are diagnosed with dyslexia more often than girls, though some research indicates that this may be at least partially due to bias on the part of some medical professionals. Some experts believe that dyslexia is the most common learning disability, affecting 5 percent or more of all elementary age children. What causes dyslexia?