on April 23, 2022
Which Van hiele level is it when students are considering classes of shapes and focusing on properties of shapes?
Space and AstronomyWhat are the levels of geometric thinking? It postulates five levels of geometric thinking which are labeled visualization, analysis, abstraction, formal deduction and rigor. Each level uses its own language and symbols. Students or pupils pass through the levels “step by step”. This hierarchical order helps them to achieve better understanding and results. What is
on April 23, 2022
How do you magnify 400x?
Space and AstronomyHow do you get 400x magnification? To calculate the total magnification of the compound light microscope multiply the magnification power of the ocular lens by the power of the objective lens. For instance, a 10x ocular and a 40x objective would have a 400x total magnification. What does a magnification of 400x mean? High Power
on April 23, 2022
What is the limit of an asymptote?
Space and AstronomyFormally, this kind of behavior of a function is called a limit. We say that as x approaches infinity, the limit of the function is 0. The line y = 0 is called the asymptote of the graph, it represents the value that f(x) will never quite reach. What is the limit at a vertical
on April 23, 2022
How do you find surface area of prisms and pyramids?
Space and AstronomyThe area of each of the triangular faces is A = 1 2 b • h, where b and h are the base and height of the triangle. Since there is also a height of the pyramid itself, let h represent the height. How do you find the surface area of prisms? To find the
on April 23, 2022
What is Charles Messier famous for?
Space and AstronomyCharles Messier, (born June 26, 1730, Badonviller, France—died April 12, 1817, Paris), French astronomer who was the first to compile a systematic catalog of nebulae and star clusters. In Messier’s time a nebula was a term used to denote any blurry celestial light source. What did Charles Messier accomplish? Over the course of his career,
on April 23, 2022
Is there a difference between perimeter and parameter?
Space and AstronomyParameter is a limit that affects how something can be done, and perimeter is the outline of a physical area. Both words have special meanings in math, but they take off their pocket protectors and relax their definitions when they join the rest of us. What is the difference between parameter and boundary? As nouns
on April 23, 2022
What is the area of a figure in square units?
Space and AstronomyThe area of a figure is the number of unit squares that cover the surface of a closed figure. Area is measured in square units such as square centimteres, square feet, square inches, etc. The area of the squares below, with unit squares of sides 1 centimeter each, will be measured in square centimeters (cm²).
on April 23, 2022
What type of star is the Polaris?
Space and AstronomyCepheid variablea “pulsing” star, a type of star also known as a Cepheid variable, which means that it appears to vary in brightness ever so slightly — only one tenth of a magnitude — over a time frame of just under four days. What class of star is Polaris? Polaris belongs to spectral class F7
on April 23, 2022
What are the 5 main phases of the moon?
Space and AstronomyThe five lunar phases that have been considered in the analyses (see the text for more details): new moon, waxing/waning crescent, first/third quarter, waxing/waning gibbous and full moon. What are the main phases of the moon? These eight phases are, in order, new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third
on April 23, 2022
What is the value of 1 Cos?
Space and AstronomyWhat is the value of 1 by cos? The value of 1+cosΘ is 2sin²(Θ/2). What is the formula of 1 COSX? Answer: The formula of (1 – cos x) / sin x = tan (x/2) What is COSX equal to? Remember the Pythagorean triple 8, 15, 17? The reference triangle has horizontal leg 8, vertical