Free! In this article, students will read about viruses, the types of viruses that cause the flu, how the immune system detects and remembers viruses, how vaccines like the flu shot work and how the flu shot vaccine is manufactured. This is a great in class activity, homework assignment, weekly science reading assignment, sub plan or in school suspension plan. Use this to save time looking for engaging and appropriate articles with questions!
Happiness is a difficult thing to measure due to its subjective nature, but scientists have been trying nonetheless. Here is a compilation of some of the most interesting findings they've gathered so far packed into one big infographic.