Khan Academy
Khan Academy: Comparing Multi Digit Numbers: Place Value Challenge
In this exercise, students practice their place value understanding by comparing multi-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Chemistry of Life: Skill Check: Chemical Bonds and Reactions
Use this skill check to test your understanding of chemical bonds and reactions.
Khan Academy
Khan Academy: Sampling Distribution of a Sample Proportion Example
Presents a problem that is similar to what might be on an AP Statistics exam. Walks students through each step for solving it and students input answers to questions along the way.
Khan Academy
Khan Academy: Tissues, Organs, & Organ Systems
Describes the main tissue types and organ systems of the body and how they function together.
Khan Academy
Khan Academy: American Indian Culture of the Southwest
We can thank the Indian tribes from the Southwest for introducing us to corn. Corn was seen as a spiritual gift in Pueblo societies. Study more of the cultural characteristics of these tribes such as their irrigation system which allowed...
Khan Academy
Khan Academy: American Indian Culture of the West
The Western Indian tribes hit the lottery with the abundant natural resources in their area. The tribes that called this area home had diverse cultures depending on the geography of their specific location. Delve into these cultures and...
Khan Academy
Khan Academy: Richard Nixon as President
Survey the successes and failures of the Nixon administration through a comprehensive summary, references for further study, questions for analysis, and a question/answer section from the community.
Khan Academy
Khan Academy: Bronsted Lowry Acid Base Theory
Understand the definition of Bronsted-Lowry acids and bases, strong and weak acids and bases, and how to identify conjugate acid-base pairs.
Khan Academy
Khan Academy: The General Multiplication Rule
An explanation with examples of how to calculate probabilities of two dependent or independent events by multiplying their probabilities. Two practice problems are provided along with their explanations.
Khan Academy
Khan Academy: Verifying Inverse Functions by Composition
Learn how to verify whether two functions are inverses by their composition. Students are given examples and practice problems.
Khan Academy
Khan Academy: Fractions: 3rd Grade Math
Unlock your personalized study plan with quizzes, tutorials, and practice with third grade specific fractions.
Khan Academy
Khan Academy: Unit: Intro to Sql: Querying and Managing Data
Learn how to use SQL to store, query, and manipulate data. SQL is a special-purpose programming language designed for managing data in a relational database, and is used by a huge number of apps and organizations.
Khan Academy
Khan Academy: Representing Graphs
Some practice problems with data and graph representation in computer science.
Khan Academy
Khan Academy: Unit: Online Data Security
Readings and practice problems about online data security.
Khan Academy
Khan Academy: Expressing an Algorithm
Practice computer science problems expressing algorithms.
Khan Academy
Khan Academy: Infographic: Timeline
An all-encompassing historical timeline from the Big Bang Theory to modern-day. PDF is available to download.
Khan Academy
Khan Academy: Division and Composition
Test your knowledge of the distinction between the fallacy of division and the fallacy of composition.
Khan Academy
Khan Academy: Denying the Antecedent and Affirming the Consequent
Test your knowledge of the fallacies of denying the antecedent and affirming the consequent.
Khan Academy
Khan Academy: Begging the Question
Test your knowledge of the fallacy of begging the question.
Khan Academy
Khan Academy: Complexity and the Future
Will our descendants enjoy lives that are richer, more fulfilled, healthier, and in general better than those of today? Or will human societies collapse under the strain of depleted resources, brutal conflicts, and environmental damage?...
Khan Academy
Khan Academy: Unit: Modeling Data Distributions
A complete unit with tutorials, text, and practice over modeling data distributions.
Khan Academy
Khan Academy: Darwin, Evolution, and Faith
Can ancient scriptural accounts of the world's creation by God be reconciled with Darwin's new story? This article looks at three responses to this question: Conflict, Contrast, and Convergence.
Khan Academy
Khan Academy: Crick, Watson, and Franklin
This article describes the race to unlock the mystery of life by determining the double helix structure of the DNA molecule. The discovery of DNA and its structure is an example of collective learning.
Khan Academy
Khan Academy: Activity: The Voyage of the Beagle
In this activity, you'll learn how to interpret images and maps in order to extract information about Darwin's trip to the Galapagos Islands. Links provided for a gallery of images and a worksheet.