Learn how to use proportional reasoning to estimate the number of t-shirts of each size to order for a field day. Review the concept of random sampling and how it helps in making valid inferences about the entire population. Explore how...

In this math video we will be reasoning with ratios for a recipe. We will be provided with 3 ingredients to a cookie recipe and we will be asked to identify ratios of ingredients where we either double, triple, or possibly halve the...

In this video, the teacher explains how to determine whether fractions convert to terminating or repeating decimals using proportional reasoning and double tape diagrams. They provide examples and clarify common misconceptions about...

SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps.



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👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...

In this lesson, students will learn how to solve word problems involving positive and negative fractions by using mathematical reasoning. The lesson emphasizes the importance of understanding the problem and ensuring that the final...

Pupil outcome: I can construct pie charts from data. Key learning points: - Data presented as a list can be represented as a pie chart. - Data presented in a table can be represented as a pie chart. - A larger data set requires...

In this math video, we the area of a sector of a circle step by step — aligned with Common Core Standard G-C.B.5! 🔵✏️
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We’re given a circle with a shaded sector, the radius, and asked to find the area of the shaded...

Earth’s outer shell is made of two materials whose different densities and thicknesses give rise to two distinct “levels” on the planet’s surface.



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Traditional costing methods have numerous positive and negative attribtutes when compared to activity-based costing. This video explains the issues that arise when using traditional costing methods rather than activity-based costing.

Traditional costing methods have numerous positive and negative attribtutes when compared to activity-based costing. This video explains the issues that arise when using traditional costing methods rather than activity-based costing.

The structure was begun 1421 and largely complete in 1440. When finished, it was, however, quite isolated, the reason being that construction for the new building for San Lorenzo, the design for which Brunelleschi was also responsible,...

In this math video we will learn how to use a ratio. We will be given a ratio of mass to volume. We will review how to write a ratio and how to write a proportion using equivalent ratios. We will use the given information and identify...

The human brain is what makes us so unique amongst mammals, and is a major reason for our success as a species. We have the largest brain of all vertebrates, relative to our body size. And to keep it ticking over, we need to eat...

In this math video we will be converting measurements: inches to feet and inches to centimeters. We will solve this two part question using conversion ratios to write equivalent ratios, also known as a proportion. We will review how to...

In this video, the teacher explains how to determine the likelihood that a hypothesis is reasonable by approximating a sampling distribution and analyzing the results. The example used is whether a majority of students in a state are in...

Learn the basics about the law of the conservation of mass, when learning about properties of matter. The Law of Conservation of Mass says that in chemical reactions no matter is lost or gained. The law of conservation of mass means that...

Thomas Jefferson influenced the architecture of the nation from the start, and he had a reason for everything he did.

Some sports attract tall athletes and some are dominated by athletes with a shorter stature. The study of allometry investigates how strength scales with height. According to science, what are the reasons that certain sports attract tall...

In this video, Jonathan from the Institute of Human Anatomy discusses the decline in muscle mass as we age, some of the main reasons for this decline, and the best type of exercise and resistance training to help minimize this...

👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...

👉 Learn how to add and subtract fractions whose denominators are not the same. Recall that when we want to add or subtract fractions having the same denominator, we add the numerators and retain the (common) denominator. This is...

This video teaches how to calculate simple interest using the simple interest formula. It uses a real-life example of a savings account and breaks down the steps to find the total amount of money after one year. It's a great resource for...

Clay Risen, a reporter at The New York Times, explores the era from 1946 to 1957 in his book Red Scare, detailing how anti-communist hysteria shaped American society. During this time, fear of communism infiltrated every level of...