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What Were They Thinking?! Lesson 8 of 9 Objective: SWBAT describe the various mental math strategies demonstrated by classmates and begin to understand the properties behind them. This lesson focuses on the number properties, but doesn't teach them directly. I use a format called a Number Talk, sometimes called a Math ...
AMERICA BUILDS AN EMPIRE Students will learn about U.S. foreign policy – reasons why the U.S. went to war with Spain in 1898 and how the U.S. acquired a colonial empire. ESSENTIAL QUESTIONS: • How did the Spanish-American War mark a “turning point” in American history? • What strategic and political factors led America...
Visualization is an important part of expressive language and idea formation. In this unit children will learn to draw 26 figures, as they learn to write the alphabet. They will learn first letters sounds and create original paintings, brimming with personality. The activities in drawing, letters & numbers are simple, ...
Social cognitive theory, originated by psychologist Albert Bandura, posits a reciprocal relationship between people and their environment, wherein people are both influenced by and active producers of their surroundings. It also puts an emphasis on observational learning, so that people learn and reproduce behavior thr...
Most members of the Ojibwa tribe wore tanned deerskin clothing, though other animal hides were also used. Both men and women wore deerskin leggings and moccasins. Men wore a breechcloth, while women wore dresses with woven nettle or thistle fibers for petticoats. Geometric designs were created on the clothing by weavin...
In 1911 and 1912 Austrian physicist Victor Hess made a series of ascents in a hydrogen balloon to take measurements of radiation in the atmosphere. He was looking for the source of ionizing radiation that registered on an electroscope – the prevailing theory was that the radiation came from the rocks of the Earth. To t...
This 1-page outline is intended to help guide students through a piece of informational text as they read. I have created questions that embed 8th grade Common Core standards with GATE ICONS to produce a comprehensive resource that can be adapted for other grades and subjects. I use these with my Language Arts kiddos e...
CARLA Crayon Logo Unit Title: Exploring Emotions #1 One Person but Many Emotions Submitted by Kimberlie Peterson * identify emotions they are familiar with. * recognize the many different emotions people can feel. * identify different reasons people feel emotions. * Compare and contrast the way emotions are associated ...
At the time the rocks of the Blue Ridge Mountains were being thrust up by tremendous forces that slowly squeezed the rocks of the region very much like a huge vise, other natural processes of weathering and erosion started tearing down the young mountains. Now, after more than 250 million years have passed, mountain bu...
Ramjet engines are one of the more rare forms of propulsion employed in the world of aviation. They are a form of airbreathing jet engine which do not employ a fan to push air into the engine; instead, the speed of the aircraft is itself used to force, or 'ram' air into the engine, hence the name. Ramjets also go by ot...
Heavy water can serve as a neutron moderator in a nuclear reactor, which slows down fast particles and encourages the fission reaction. Neutrons in a fission reaction travel either fast or slowly. The fast neutrons tend to be absorbed by certain isotopes of uranium rather than continuing the fission reaction, but the l...
People may not be quite the humans they think they are. Or so suggests new research showing that the human genome is part bornavirus. Bornaviruses, a type of RNA virus that causes disease in horses and sheep, first inserted their genetic material into ancestral human DNA at least 40 million years ago, the study shows. ...
Children learn by exploring their environment. But their exploring should happen in safe places under guidance and in ways that help them learn from Parents and Teachers. As you see your child begin to discover his/her world, keep these ideas in mind: - Exploring is normal and important for children, it may be interact...
TREATMENT for a lethal form of brain cancer could be on the horizon after the discovery that it forms as a result of genes fusing. Anna Lasorella at the Institute for Cancer Genetics at Columbia University in New York and colleagues found that about 3 per cent of glioblastoma tumours that they studied were caused by th...
Teaching Social Skills Autistic children find difficulty in initiating conversations, creating personal relationships, maintaining eye contact, empathizing with others, etc. This does not mean that they do not desire social interaction; the major issue here is that they lack the social skill to socially interact with o...
There are a few well-researched theories about why dinosaurs are extinct; one of the most prominent theories hypothesizes that a massive asteroid impact killed off the dinosaurs. Another states that heavy volcanic eruptions across the Earth may have been responsible.Continue Reading The asteroid-impact theory states th...
8th Grade Social Studies Lesson Study Content – As we introduce our unit on the United States Constitution, we will examine the intent and underlying philosophies of the framers. The learning goal is to understand the concept of basic rights and the role of government. Process – The students will be split up into group...
Developing Arts Literacies: Understanding Genres, Analyzing and Evaluating - Critique, Applying Vocabulary This lesson will introduce students to both conceptual and practical elements of classical ballet. They will learn basic ballet vocabulary through both verbal instruction and demonstration. Students will then asso...
Finding plant remains that survive the high temperatures, rainfall, and mold common in the tropics is extremely difficult. Instead, scientists study so-called phytoliths, hardened pieces of silica formed by plants as protection against herbivores and pathogens. The size of the phytoliths is an indicator of their source...
Read this article to learn about graphical and mathematical curve fitting methods of frequency analysis! Graphical Curve-Fitting Procedure: In a simple graphical curve fitting procedure the observed floods are plotted on a probability paper and a best-fit curve drawn by “eye” through the points. Log-normal probability ...
We must abandon our idea of a static, knowable educator and move on to a view of an educator in a state of constant change and becoming. The role of the educator shifts from a communicator of knowledge to a listener, provocateur, documenter, and negotiator of meaning. Pacini-Ketchabaw et al., 2009, p. 103 (The Kinderga...
“I think, therefore I am,” one of the most famous philosophical proclamations ever written. The man who wrote these words? René Descartes. Born in 1596 he spent much of his life in the Dutch Republic. His unconventional philosophical ideas eventually shaped western thought. So much so that he is considered the father o...
Lacking electricity but got sun? Discover how solar cells can turn one into another. What do you know about solar power? Is it a really good way of electricity production in Nigeria? How do solar cells actually work? Find out more information about solar power system and its peculiarities from this article. How does so...
How many legs does a kangaroo have? The correct answer, according to new research, is five. A study in this week's Biology Letters says that a walking kangaroo propels itself with its tail, essentially transforming the appendage into a fifth "leg." The study found that the tail of a walking kangaroo works as hard as th...
Clay, Calhoun, Webster Essay, Research Paper In 1816, soon after the end of the War of 1812, the British, who had failed to defeat the Americans in battle, attempted to shut down the newly formed American manufacturing business. They were sending over materials to the U.S. and extremely low prices in an effort to crate...
With an increasing awareness growing around the field of mental health, some of us today have heard of the word autism. However, there is still a large section of the society that would not have a clear understanding of the autism spectrum and what such a diagnosis connotes, in addition to those who are likely to have ...
In the 1930's (before the advent of the digital computer) several mathematicians began to think about what it means to be able to compute a function. Alonzo Church and Alan Turing independently arrived at equivalent conclusions. As we might phrase their common definition now: A function is computable if it can be compu...
In a behavioral context, self regulation refers to the ability to act in a long term context consistent with your deepest values (Psychology Today). What does this mean for a child who is still developing a moral compass? Primarily that they value the power of adults and morally want to please them. It may also mean th...
Comets, Jupiter's Family of Comets, Jupiter’s Family of a group of short-period comets whose aphelia are situated near the orbit of Jupiter. Jupiter is a planet of great mass, and its gravitational attraction greatly affects cometary motion when the comets periodically approach the planet. Thus, it has been calculated ...
Simulating Meteor Strikes A tray, like a cooking tray, or a shallow pan A few hundred grams of flour A fine powder that's a different colour to the flour (we've used cocoa but custard power might do) Small round things around the size of maltesers! 1 - Lay at least an inch of flour into the tray. You don't want to make...
Germ cell tumours occur when abnormal germ cells grow in an uncontrolled way. A germ cell is the type of cell that develops into eggs (in the ovaries) or sperm (in the testicles). Germ cell tumours can develop before or after birth, and can occur in the ovaries or testicles, or in other parts of the body. This is becau...
Dayton History, Ohio Dayton, OH, US was originally inhabited by an ancient people known as the Mound-Builders. Little is known about their culture except for what can be fathomed from the excavations of their giant mounds. The Mound-Builder culture either disappeared or evolved into the American Indian culture. The Mia...
Not long ago the debate was still heated as to as whether or not the earth is warming. Today it has been established that the planet is indeed warming and that, as a 2001 statement from the National Academy of Science puts it, "changes observed over the last several decades are likely mostly due to human activities." S...
The cornea on the outer part of the eye and the lens within the eyeball are responsible for bending light (refraction) so that it focuses on the most sensitive part of the retina. The sharper the image cast on this area, the clearer of vision. The more common vision problems are associated with refractive errors – this...
In this subtraction practice worksheet, students draw or show the 3 math stories with counters, write the numbers, and solve each the 3 problems. 3 Views 3 Downloads Word Problems Involving Subtraction A classic math lesson like this one involves a warm up, guided practice, application, and assessment. Get those 2nd gr...
Finding out a percentage of a number say you were asked to find 85% of 65, you could find out: - 10% = 6.5 - 80% = 52 - 5% = 3.25 so 52 + 3.25 = 55.25 or alternatively, you could simply: 65 * 0.85 = 55.25 to increase a number, say 40 by 20%, you could find: - 10% = 4 - 20% = 8 - 40 + 8 = 48 or alternatively, you could:...
Two Greek mathematicians pioneered research to navigate and map the Earth. Eratosthenes of Cyrene, chief librarian at the Ancient Library of Alexandria, calculated the circumference of the Earth in the third century B.C. In the second century B.C., Hipparchus of Nicea first used mathematics to calculate latitude and lo...
Manipulating Objects and Figures to Visualize a Narrative. When readers manipulate objects after reading a story it usually results in improved mental imagery and reading comprehension outcomes. Children are more able to retain imagined pictures of story events after they have used object manipulations even after sever...
The British and US systems of government have had substantial influence on the Australian system of government. In fact the Australian federal Parliament has been referred to as a "Wash-minster" model – a combination of the US "Washington" model and the British "Westminster" model. Before 1901 the Australian continent ...
The Photoelectric Effect Back to Contents Imagine a piece of polished metal. It appears to be made of one smooth, continuous substance. But we know that it’s made of separable parts because we can break it or cut it. The material is divisible, but not infinitely so. The metal possesses a property, mass-energy, whose va...
In typography, an all-inclusive term for characters that have a line crossing the free end of a stroke. The term serif refers to both that finishing line, and to characters and typefaces that have them. It is said that the Romans invented the serif as a solution to the technical problem of getting a chisel to cut a nea...
1 November 2016 We can easily rate how accurate a weather forecast is, because we only have to wait a day or two (or even hours) to see if it was right. Seeing how accurate climate projections are is a little harder, because we have to wait decades (and centuries) to if they are on track. To make it even trickier, we c...
Life in the taiga is not easy. The taiga is the second-coldest land biome on Earth, after the frozen and treeless tundra. However, despite the region's extreme temperatures and heavy snowfall, many animals have adapted to survive and thrive in the environment of the taiga. Winter in the taiga is harsh. Temperatures dro...
Ground-based observatories, located on the surface of Earth, are used to make observations in the radio and visible light portions of the electromagnetic spectrum. Most optical telescopes are housed within a dome or similar structure, to protect the delicate instruments from the elements. Telescope domes have a slit or...
“Science is more than a body of knowledge,” Carl Sagan said. “It’s a way of thinking; a way of skeptically interrogating the universe.” And teaching science means teaching more than groups of facts – it means teaching the natures of science (NOS). A 2010 study of three elementary students found that, “Although each had...
Dysentery, infectious disease characterized by inflammation of the intestine, abdominal pain, and diarrhea with stools that often contain blood and mucus. Dysentery is a significant cause of illness and death in young children, particularly those who live in less-developed countries. There are two major types: bacillar...
Paleontologists once thought that Carcharodontosaurus had the longest skull of any of the theropod dinosaurs. However, the premaxilla and quadrate bones were missing from the original African skull, which led to misinterpretion of its actual size by researchers. A more modest length of five feet, four inches (1.6 meter...
Most books of the Old Testament have Targums. The only exceptions are Daniel, Ezra, and Nehemiah. The reasons for these omissions are not clear. Perhaps it is due to the fact that these books already contain some Aramaic, especially since Daniel is about half Aramaic. It does seem to be clear that the third section of ...
Ants are common insects. There are more than 12,000 kinds in the world. They are born, and live and work in a colony with many other ants. An ant goes through four stages of development: egg, larva, pupa/cocoon and adult. An ant egg is about the size of a period at the end of a sentence. An egg is kidney-shaped and sof...
Every day we rely on devices—cell phones and computers, for example—that require space on the radio frequency spectrum to carry electrical signals. But the spectrum is running out of frequencies as our dependence on technology increases. Associate professor of engineering Mable Fok, recipient of a National Science Foun...
Irritability is the excitatory ability that living organism have to respond to changes in their environment. The term is used for both the physiological reaction to stimuli and for the pathological, abnormal or excessive sensitivity to stimuli. Neurobiologically, irritability can be adaptive and productive, motivating ...
It's long been known that fluctuations in the length of an Earth's day correspond to flows of liquid iron within the Earth's outer core, where the planet's magnetic field originates. As conditions in the outer core are inhospitable, to say the least, we can't measure those flows directly but we can measure changes in t...
Everything which we see and perceive around us is due to the human eye. The human eye is a sense organ which helps us in seeing things around us by absorbing light. The eye is responsible for all the vision we can experience in our daily lives. The human eye is one of the most valuable and sensitive sense organs. It en...
Here, at the annual meeting of the American Association for the Advancement of Science in Chicago, Ill., geologists have announced data that reveals the inner workings of a new kind of tectonic plate movement. Using GPS satellites, Susan Schwartz, professor at the University of California at Santa Cruz, took an in-dept...
War disrupts populations, and refugees fleeing the conflict may leave their country permanently to settle elsewhere. The first World War caused such disruptions throughout Europe, the Middle East, and parts of Asia. Crossing one border was no longer an escape for many of these people on the move. Refugees fled to count...
Additional info from Skeptical Science Volcanoes emit sulfate aerosols which reflect incoming sunlight, cooling the planet. A large volcanic eruption such as the Pinatubo eruption in 1991 can have a global cooling effect of 0.1° to 0.3°C for several years. However, mega-eruptions or a series of eruptions can have a coo...
Molasses played such a starring role in the colonial New England Thanksgiving that a shortage of it in 1705 forced Colchester, Conn., to postpone the holiday for a week. The weather turned unusually frigid for the Connecticut Valley town that fall. In mid-October a terrible cold snap lasted for three days, followed by ...
Only approximately 10 percent of the population is left-handed, with a common gene present in many left-handed people, according to the American Psychological Association. Tiffany Brosig 10 Ways to Teach Children Numbers Kindergarten often begins with teaching students to recognize numbers. Number Books Have students c...
Cause for Action Imagine a country where a person’s belongings could be taken at any moment and then given to someone else for no apparent reason. Likewise, that same person’s culture, their way of life, would be disregarded, and they would be forced to use a new language and adapt to a different culture. After the cul...
Flowers are telling birds to come and eat them - by turning red. It turns out, that with climate conditions proving a risk to bee populations, some flowers are adapting by asking birds to pollinate them instead. And just how do they 'ask'? By turning red! Red is a more attractive colour to birds, because the "spectral ...
Normal Distribution in Excel: Finding Area A Normal Distribution Curve The normal distribution is a very common continuous probability distribution in probability theory. The normal distribution is often referred to as the bell curve even though other distributions have a bell-shaped curve as well. This distribution is...
Below we will explain the basic steps to help you learn how to solve all the second degree equations, both complete and incomplete. Second-degree equations are also known as quadratic equations. Índice de Contenidos - 1 Complete second-degree equations - 2 What are complete second-degree equations - 3 How to solve comp...
Two European crows that look quite different from each other are actually diverging from a single species, right before our eyes. In Western Europe, it’s the inky-black carrion crow (Corvus corone). In the east, the grey hooded crow (C. cornix). They overlap in a very narrow zone running along the River Elbe in Germany...
He was the first to put forth the theory that children develop in specific stages. Lawrence Kohlberg was an American developmental psychologist born in whose primary focus was on how children develop a sense of morality. The theories of Kohlberg are based on those of Piaget, although their theories and approaches diffe...
The following is adapted from First Time Coders. Knowing how to code can give children a leg up in the world. It is a marketable job skill, and it also teaches valuable skills that can help students succeed in school and life, like problem-solving, logical thinking, and creativity. Coding can be especially powerful for...
TOPIC 2: ELECTRICITY In this section we will take a closer look at some other common components in circuits, and learn a bit more about how they function. Light bulbs used in laboratory circuits (correctly called filament lamps) have a very thin wire inside. This wire glows white hot when a current passes through it, p...
Measuring the impact of a city's buildings on the weather new model developed at EPFL can help engineers and meteorologists quickly calculate the effect that city buildings have on local weather patterns. A blinds manufacturer is already interested in it, and climate scientists could be next. The shape of city building...
Researchers have discovered evidence of a massive volcanic eruption that may help explain our planet’s climatic history—and perhaps how to deal with climate problems today. The team of scientists were led by Klarissa Davis and John Wolff. Their work was funded by the National Science Foundation and published in the jou...
Units and Standards History, The Metric System, Le Système International D'unités (the Si System), Derived Units A unit of measurement is some specific quantity that has been chosen as the standard against which other measurements of the same kind are made. For example, the meter is the unit of measurement for length i...
A new virus causing COVID-19, previously known as 2019-nCoV, has been making headlines around the world. Cases of COVID-19 have been concentrated in China, but have also been reported in other countries around the world. The United States announced its first confirmed case on Jan. 21, 2020, in a traveler returning to S...
Ancient polar ice sheets buried under the planet’s surface — which could turn out to be one of the largest water reservoirs on Mars was discovered by the scientist at Univesity of Texas at Austin and the University of Arizona Mars has polar caps, both in the north and south. The two caps incorporate a permanent cap vis...
In this explainer, we will learn how to solve a system of two linear equations by considering their graphs and identifying the point of intersection. When we are asked to solve a system of linear equations (sometimes called simultaneous equations), we are trying to find any points at which the equations are equal, that...
When it comes to knowing what kinds of minerals we might find inside the Moon, we’ve literally just scraped the surface. For one small team of Earth scientists from the US and Canada, that’s enough to suggest there’s treasure hiding deep below. Mining for riches is the last thing that’s on the researchers’ minds, thoug...
In English, there are three main focus areas: Speaking and Listening Writing (including Spelling & Handwriting) During Key Stage 1 (Years R – 2), pupils learn to speak confidently and listen to what others have to say. They begin to read and write independently and with enthusiasm. They use language to explore their ow...
The Battle of Lake Erie Bicentennial is upon us. Most islanders are aware of the history of the Battle of Lake Erie and the famous Commodore who commanded his soldier/sailors who, for the first time in history, defeated a British fleet. Not surprisingly, many people have no idea what the Battle of Lake Erie fought out ...
According to new research from Johns Hopkins University School of Medicine, some nerve cells in the inner ear can signal the brain about tissue damage in a way similar to pain-sensing nerve cells in the body. If the finding, discovered in rats, is confirmed in humans, it may lead to new insights into hyperacusis, an in...
Strange radiation streaming from the core of our Milky Way galaxy may be a long-sought signal of dark matter, the elusive stuff thought to make up much of the universe, a new study reports. Researchers using the European Space Agency's Planck satellite have characterized in great detail the radiation that forms a myste...
Sound generated above the human hearing range is called ultrasound. Although ultrasound behaves in a similar manner to audible sound, it has a much shorter wave-length. This means it can be reflected off very small surfaces such as defects inside materials. It is this property that makes ultrasound useful for medical t...
Discovering and Proving Angle Relationships Unit 5: Check the angles and corresponding sides: We know that a proportion is two ratios that are equal to each other, so you can use either ratio, the relative size or the scale factor, and find the missing side. Solve and Prove Similar Polygons. Set up a proportion to find...
World Wetlands Day [2nd February 2020] Theme: Wetlands and Biodiversity In the last decade, Zimbabwe assented to the Ramsar Convention on Wetlands of International Importance. The Convention is also known as the Convention on Wetlands. The Convention seeks to protect and preserve wetlands. The Convention has what is kn...
Standards with the same topic and subject but for other grades A vertex is the point at which two or more lines, line segments, or rays meet to form an angle. The term vertices is the plural form of vertex. A right angle measures exactly 90 degrees. The student will measure right, acute, obtuse, and straight angles. An...
This article needs additional citations for verification. (August 2015) (Learn how and when to remove this template message) Mirroring is the behavior in which one person unconsciously imitates the gesture, speech pattern, or attitude of another. Mirroring often occurs in social situations, particularly in the company ...
This blog originally appeared on Planet 3D Neuroscientists at Duke University have networked the brains of both rats, and more recently monkeys, in a process which they have named Brainets. It consists of different clusters of animals that can, in the case of monkeys, merge their brains to control a virtual avatar arm....
This collection of Close Reading resources is free from The Curriculum Corner. This is another free resource for teachers from The Curriculum Corner. Our close reading collection includes mini lessons, graphic organizers & much more! Help students learn how to complete a close read with this collection of resources. Yo...
The wild burro was first introduced into the Desert Southwest by Spaniards in the 1500s. Wild burros have long ears, a short mane and reach a height of up to 5 feet at the shoulders. They vary in color from black to brown to gray. Originally from Africa (where they were called the wild ass) these pack animals were priz...
A Visitor's Guide to Colonial & Revolutionary New England The Great Awakening “Jonathan Edwards, a Congregational minister who had succeeded his grandfather as minister in the Connecticut River valley town of Northampton, Massachusetts, noticed a great increase in religious enthusiasm among the townspeople in 1735. Mos...
Harriet Tubman (1822–1913) was an escaped slave who became a leading figure in the abolitionist movement. Harriet Tubman also served as a spy for the US army during the civil war and was an active participant in the struggle for women’s suffrage. Tubman was born Araminta Ross, to slave parents who lived on plantations ...
According to researchers, volcanic gases could have created an atmosphere almost devoid of oxygen. And while oxygen is believed to be one of key factors that enable life in general, this low-oxygen environment could have been perfect for the emergence of life. "Reducing anoxic conditions are potentially conducive to th...
As demonstrated through the U-boat Project, World War 1 shipwrecks in Welsh waters are vitally important for our understanding of the history of the First World War. The wreck sites themselves, the accounts of their sinking and the stories of the people who were aboard them reveal great acts of bravery and sacrifice wh...
When is May Day? Always May 5th! "Cinco de Mayo (Spanish for "Fifth of May") is a regional holiday in Mexico, primarily celebrated in the state of Puebla, with some limited recognition in other parts of Mexico. The holiday commemorates the Mexican army's unlikely defeat of French forces at the Battle of Puebla on May 5...
Historians have long debated the causes of the English Civil War. While some historians argued that the struggle was the inevitable outcome of centuries of conflict between a democratic parliament and an autocratic monarchy, other scholars claimed that it was a war between an aspirant bourgeoisie and a sclerotic, overb...
Our editors will review what you’ve submitted and determine whether to revise the article.Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Landslide, also called landslip, rock, debris, earth, or soil (soil being a mixture of earth and debris). Landslide...
Over recent decades, many commercially harvested fish have grown slower and matured earlier, which can translate into lower yields and a reduced resilience to overexploitation. Scientists have long suspected that rapid evolutionary change in fish is caused by intense harvest pressure. Now, for the first time, scientist...
Our sun is located in the Gould Belt, a group of stars which is thought to be 30 - 50 million years old. However, the sun formed 4.6 billion years ago. Did the belt form around us? Astronomy Stack Exchange is a question and answer site for astronomers and astrophysicists. It only takes a minute to sign up.Sign up to jo...
This fact sheet examines the Magna Carta—the 'Great Charter'. The Magna Carta was important in the development of democracy and has influenced many other documents including the Australian Constitution. Learn about the 1215 edition, the 1297 Inspeximus edition, and the legacy of the Magna Carta. The first version of th...
Think of an asteroid. Doesn’t matter which asteroid. Odds are good you thought of something that looks like a lumpy, craterous potato. Astronomers agree with you — most of the rocks in our asteroid belt look pretty careworn. So they expected that when NASA’s Dawn spacecraft got to Ceres, they would see similarly many l...
Scientists and policy makers alike have recognized that agricultural yields are at risk from climate change and human-caused emissions. Carbon dioxide is the largest driver of climate change, but in a new study, Shindell found that other anthropogenic, or human-sourced, emissions cause more damage to crop yields. Metha...
On Monday 16th September, Year 4 visited ‘The Deep’ to find out about different sea creatures and their habitats in the different ocean layers. The trip covered a variety of our Science learning objectives about animals and their habitats as part of our project ‘The Blue Abyss’. They took part in a workshop where they ...
Matthew’s Gospel tells us that, at the moment Christ died, darkness swept over the land for three hours (Matthew 27:45). The foreboding skies at Christ’s crucifixion were also recorded in Luke 23:44-45 and Mark 15:33. Mark’s account, thought to have been written around the year 70 CE, was likely the earliest. Some scho...
Kevin Williams is the Program Consultant for K-8 Numeracy with the Dufferin Peel Catholic District School Board, and a senior tutor with Homework Help, the free online math resource for kids in grades 7 to 10. Geometry and spatial sense is one of the five content strands in the Ontario Math Curriculum that is gaining i...

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