After malaria has been confirmed by lab or biochemical diagnosis, treatment must begin immediately. But first the type of Plasmodium causing the infection, whether the patient has severe or non-severe infection, and if the parasite is...

An overview of how to prevent getting malaria including insecticides, repellents, eliminating mosquito breeding areas, malaria prophylactic drugs.

This article explains the concepts of drug use and dependence.

Substance use disorders are a class of psychological disorder in which a person continues to use a substance, despite having significant health, social, and other negative consequences as a result of their substance use.

An explanation of the effects the psychoactive drugs, depressants and opiates, have on the body.

Decide if objects are above, below, beside, in front of, or behind other objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this practice quiz, students are asked to determine the slope of each line graph. Includes hints.

The Khan Academy lesson explains what remainders are in division and what they actually mean in some different contexts. Five practice problems and their solutions are included.

Practice solving more word problems by finding how many more (or fewer) objects there are. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...

Practice solving more challenging word problems with addition and subtraction. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding and subtracting using the number line. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding and subtracting within one hundred with these multiple-choice problems.

Practice adding and subtracting within one hundred with these multiple-choice problems.

A visual glimpse of Threshold 8 in Big History - The Modern Revolution.