## Video: How to Solve a Problem

How to Solve a Problem: Make it an Easier Problem Using the example of subtraction with three-digit numbers, this video shows how to solve a problem by making it into an easier problem.

## Video: Perimeter of a Polygon

How to Find the Perimeter of a Polygon Learn how to find the perimeter using multiplication and addition and how to identify polygons. Examples including finding the perimeter for a rectangle, triangle, and a square. https://www.youtube.com/watch?v=5FEzTscZZ6s

## Video: Multiply 2 and 3 Digit Numbers

Long Multiplication: Multiply 2 and 3-Digit Numbers This long multiplication video provides step-by-step examples. Students new to long multiplication learn to break down a long multiplication problem into 5 steps to solve it. Afterward, do a math reality check (1:46). https://youtu.be/rKQ-2WMNMnU

## Video: Long Multiplication

Let’s talk about long multiplication starting with multiplying two numbers. Examples are enclosed in the video.

## Video: Using Timelines with B.C.E.

Two videos about B.C.E. timelines in both Spanish and English “Using Timelines With B.C.E.” is available in English below. (Grades 5-7) “How to Solve the Timeline Problem” is available in both English and Spanish. (Grades 5-7) Video: Using Timelines With B.C.E. Learn how the B.C.E. timeline works in this video. This is for Grades 5-7

## Video: What’s the Word? World History Terms

What’s the Word? World History Terms Here are five main key terms covered in this video. Check out the Spanish version below! ancient indigenous masters of mastery empire Términos de Historia

## Video: Explaining Distributions and Variability

Explaining Distributions and Variability How can knowledge of distributions save you from angry, spear-wielding villagers? Watch this video from the AzTech series to find out.BONUS : Also available in Spanish below. Explicando distribuciones y variabilidad, con plátanos y aldeanos enojados. https://youtu.be/Pp4f0jOqrUU Explicando distribuciones y variabilidad, con plátanos y aldeanos enojados

## Video: Finding the Average

Finding the Average What is the mean? Can you sing the formula for it? So first you are going to add up the numbers you have. The second step is to divide however many numbers there were in the first place. BONUS: Watch it in Spanish – extra bonus, no singing. Scroll down to Encontrando

## Video: Why Did the Maya Hunt?

Why Did the Maya Hunt? What’s an X axis? What’s a Y axis? Another example of using bar graphs, explaining Mayan hunting practices.Scroll down to watch it in Spanish language version, “¿Por qué cazaban animales los Maya?” https://youtu.be/1r4wWMQC-cQ?list=PLlFtdlHUZsQuRezqE1Msot5FGA8xFcHez ¿Por qué cazaban animales los Maya? Una lección sobre gráficos de barras e historia al mismo tiempo.