Khan Academy
Khan Academy: Use Similar and Congruent Triangles
Solve geometry problems with various triangles by using all you know about similarity and congruence. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Solve Similar Triangles (Basic)
Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Find Angles in Congruent Triangles
Given two triangles, determine whether they are congruent and use that to find missing angle measures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Solve Similar Triangles (Advanced)
Given two similar triangles and some of their side lengths, find a missing side length. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Solve for a Side in Right Triangles
Given one side length and an acute angle in a right triangle, find another side using trigonometry. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Multiple Recursion With the Sierpinski Gasket
See a good example of a mathematical construct that is a fractal known as a Sierpinski gasket.
Khan Academy
Khan Academy: Shading Packets Practice
In this nine-problem exercise, students are presented with a reference for the dinosaur leg. They practice with this before moving onto real shading packets.
Khan Academy
Khan Academy: Start Here! Building a Simple Snowman Model and Rig It
Introduction to this lesson where you will build a simple snowman model and rig it using javascript. Then you can extend the model to create your own character in the final project. It provides an overview of the lesson and what you need...
Khan Academy
Khan Academy: Start Here! Welcome to the Character Modeling Topic!
Welcome to the Character Modeling topic! In this topic, we'll explore how clay models are transformed into digital characters using weighted averages. It includes two lessons: Lesson 1: Modeling with subdivision surfaces (appropriate for...
Khan Academy
Khan Academy: Hands on Activity: String Art
This is a hands on activity designed to follow the first lesson on string art. Students will use needle and thread to create interesting string art designs. Specific steps are provided with suggested times for each. The activity is most...
Khan Academy
Khan Academy: Gamut (Practice)
This is a six-problem quiz/practice to help understand what a color gamut is and why it is important.
Khan Academy
Khan Academy: Circulatory Diseases: Overview of Heart Failure
This unit overview provides information about heart failure. This information is intended for college students who are taking courses in the health and medical fields.
Khan Academy
Khan Academy: Practice: Anatomy of the Sun Quiz
It might look like a solid object, but the Sun is very different from Earth. Find out what it's made of, and how reactions inside the Sun generate all that energy and drive powerful solar storms. Try this quiz!
Khan Academy
Khan Academy: How Do You Become a Police Officer?
Learn about the basic requirements to become a police officer and opportunities to progress in this career.
Khan Academy
Khan Academy: How Do You Become a Firefighter?
Learn about the basic requirements and training required to become a firefighter.
Khan Academy
Khan Academy: Velasco, the Valley of Mexico
"The Valley of Mexico from the Hillside of Santa Isabel" by Velasco represents an important period in the development of Mexico's national identity and an important chapter in the history of Mexican art. Velasco's landscapes became...
Khan Academy
Khan Academy: Art History: Duccio's Madonna and Child
Video and short article discussing the history and features of the Duccio's Madonna and Child. [4:46]
Khan Academy
Khan Academy: Art History: Cuneiform and the Invention of Writing
Article discussing early forms of writing in the Ancient Near East. Includes links to additional information.
Khan Academy
Khan Academy: Art History: Ancient Near East
A short introduction to the ancient Near East, followed by sections providing an in-depth coverage. Includes links to additional information.
Khan Academy
Khan Academy: Finding Absolute Values
In this exercise, students practice finding absolute values. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Interpreting Absolute Value
Practice understanding the meaning of absolute value in real-world scenarios. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Adding Negative Numbers
Practice adding positive and negative single-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Within 100 Word Problems 1
Practice adding and subtracting to solve word problems. These questions are result unknown or change unknown problems. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try questions...
Khan Academy
Khan Academy: Add and Subtract Within 100 Word Problems 2
Practice solving word problems with addition and subtraction. These questions are comparison problems including difference unknown, smaller value unknown, and bigger value unknown. Numbers used are 100 or less. Students receive immediate...