Image-maker Alexander Tsiaras shares a powerful medical visualization, showing human development from conception to birth and beyond. (Some graphic images.)

It's your first day at Magnificent Marigold's Magical Macademy. But before you can learn your first spell you must get through the sorting ceremony. And the sorting hat has chosen you for a special challenge. The Macademy had 8 founders...

You’ve been accused of a crime you did not commit. It’s impossible to prove your innocence. If you insist that you’re innocent anyway, you’ll likely be found guilty and executed. But if you confess, apologize, and implicate others,...

Over the years, lots of explanations have been proposed as the origin of Stonehenge, including lost technologies, outright magic, and — of course — aliens. What do we actually know about this prehistoric mystery?

In this shorts math video, we will answer a standardized math test question about the conditional probability of drawing a blue marble from a bag of marbles. We will review the information provided to understand the number of marbles in...

In this shorts video we will learn how to factor a trinomial to answer a standardized math test question. We will first examine our answer choices and understand that each has been factored using a value of 8. We will use the table...

In this shorts video we will find the area of a Valentine's Day Heart. We will be presented with a composite figure, a heart. A composite figure is a figure composed of two or more two-dimensional figures. The heart is formed by a...

In this shorts math video we will write & solve a real world system of linear equations. We will define our variables and use the information provided to write two linear equations in two variables. We will understand that the sum of...

In this math video we will learn how to solve a nonlinear system of equations. We are given two equations - one is a quadratic equation and one is a linear equation - and four possible solutions. We are told that the system has one...

In this math video we will learn how to find a unit rate using a double number line. This visual model will make easy work of interpreting the given relationship and how to determine the unit rate with a fractional value with ease. We...

In this video we will use a double bar diagram to model how to find unit rate with one fractional quantity. We will interpret the information given. We will understand that unit rate is a rate where the second quantity is 1. I will...

In this math video we will find unit rate using a table. We will be given a relationship where one quantity is a fraction. We will set up and use a table to find the unit rate. We will find the reciprocal and multiply the fractional...

In this math video we will write and simplify a complex fraction to find unit rate. We are given a relationship and asked to find the unit rate. We will write the relationship as a ratio in fraction form. Since one of the quantities...

In this math video we will find unit rate using a table. We will be given a relationship where both quantities are fractions. We will set up and use a table to find the unit rate. We will find the reciprocal and multiply the...

In this video we will use a double bar diagram to model how to find unit rate with two fractional quantities. We will interpret the information given. We will understand that unit rate is a rate where the second quantity is 1. I will...

In this math video we will learn how to find a unit rate using a double number line. This visual model will make easy work of interpreting the given relationship and how to determine the unit rate with two fractional values with ease. ...

In this math video we will write and simplify a complex fraction to find unit rate. We are given a relationship and asked to find the unit rate. We will write the relationship as a ratio in fraction form. Since both of the quantities...

In this math shorts, we’ll estimate an irrational square root using a number line and perfect squares! Watch how we find which perfect squares a non-perfect square root falls between — and how to decide which it’s closest...

In this math shorts, we’ll learn how to determine which of four numbers could round to a given value when rounded to the hundredths place!
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We’l
l review:
✅ How to identify the hundredths and thou
sandths...

In this Grade 7 math video, we solve a problem aligned with Standard 7.G.A.2 — determining which sets of angles or sides CANNOT form a triangle!
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We review two key
theorems:
🔹 Triangle Sum Theorem — The sum of the...

In this math video we will discover polynomial subtraction. We’ll subtract two polynomial expressions using the vertical stacking method — line up the like terms and subtract each set of like terms.
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You’ll watch the...

In this math video, we’ll explore how to determine if a table represents an exponential function using a real-world bacteria growth scenario.
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We start with a culture that begins with 1,000 bacteria, and each hour, the...

In this quick math short, we start with the formula for the area of an isosceles right triangle and show how to rearrange it to solve for s, the side length. Then, we identify which of four answer choices gives an equivalent...

In this high school algebra math video we will be interpreting an exponential model or a real world problem.
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A t-shirt company purchases a new packaging & tracking system — and we are given an equation that models...