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Willem Einthoven (21 May 1860 – 29 September 1927) was a Dutch medical doctor and physiologist. He invented the first practical electrocardiograph (ECG or EKG) in 1895 and received the Nobel Prize in Physiology or Medicine in 1924 for it ("for the discovery of the mechanism of the electrocardiogram").
The Common Core State Standards Initiative, also known as simply Common Core, was an American, multi-state educational initiative begun in 2010 with the goal of increasing consistency across state standards, or what K–12 students throughout the United States should know in English language arts and mathematics at the conclusion of each school grade.
Willem Einthoven, Dutch doctor, physiologist and received the Nobel Prize in Physiology or Medicine; Lodovico Ferrari, Italian mathematician; Alexander Fleming, Scottish biologist, pharmacologist and botanist; Joseph von Fraunhofer, German optician; Hans-Georg Gadamer, German philosopher of the continental tradition
reading and mathematics, for which children are tested in grades 3 through 8. “If a child fails the test, she is judged not to have received a good education from the school. If the school does not make Adequate Yearly Progress (AYP) on student test scores, the school is considered not providing a good
Regnier de Graaf (1641–1673), physician and anatomist, who made key discoveries in reproductive biology Jacobus Henricus van 't Hoff (1852–1911), chemist Coenraad Johannes van Houten (1801–1887), chemist, inventor, known for the Dutch process chocolate
Einthoven is a German surname. Notable people with the surname include: Louis Einthoven (1896–1979), Dutch lawyer; Willem Einthoven (1860–1927), German physiologist
Graphical representation of Einthoven's triangle. Einthoven's triangle is an imaginary formation of three limb leads in a triangle used in the electrocardiography, formed by the two shoulders and the pubis. [1] The shape forms an inverted equilateral triangle with the heart at the center. It is named after Willem Einthoven, who theorized its ...
However, with the adoption of the Common Core Standards in most states and the District of Columbia beginning in 2010, mathematics content across the country has moved into closer agreement for each grade level. The SAT, a standardized university entrance exam, has been reformed to better reflect the contents of the Common Core. [1]