This 10-minute video lesson discusses how cytotoxic T-Cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells. [Biology playlist: Lesson 56 of 71].

This 21-minute video lesson provides an introduction to helper T-Cells and their role in activating B cells. [Biology playlist: Lesson 55 of 71].

This 15-minute video provides an overview of the inflammatory response. [Biology playlist: Lesson 58 of 71].

This 16-minute video lesson looks at the role of phagocytes in innate or nonspecific immunity. It also discusses neutrophils, macrophages, and dendritic cells. MHC II. [Biology playlist: Lesson 51 of 71].

This 8-minute video lesson presents an overview of types of immune responses. It looks at the difference between innate and adaptive immunity and the differences between humoral adaptive immunity and cell-mediated adaptive immunity. [Biology playlist: Lesson 52 of 71].

This site gives students the opportunity to learn all about cells, microbes and the immune system

CELLS alive! represents 30 years of capturing film and computer-enhanced images of living cells and organisms for education and medical research. The site has been available continuously and updated annually since May of 1994 and now hosts over 4 million visitors a year. All text, images, and layout are provided by me, Jim Sullivan. Every effort has been made to minimize errors or typos, but any you find on these pages are my doing as well.

The majority of the site is free of cost and registration for anyone with internet access. With up to 45,000 visitors a day during the school year, hosting costs are an issue. Students and teachers who purchase downloads for classroom use make this possible.

This lesson describes the major components and functions of the immune system and the role of engineers in keeping the body healthy (e.g., vaccinations and antibiotics, among other things). This lesson also discusses how an astronaut's immune system is suppressed during spaceflight due to stress and other environmental factors.

Students learn the purpose of a fever in the body's immune system and how it protects the body against germs. The students continue to explore temperature by creating a model thermometer and completing a temperature conversion worksheet. They come to see how engineers are involved in designing helpful medical instruments such as thermometers.

Free Science, Socials Studies and Health lessons developed by teachers to inspire digital-age students in support of UNICEF Canada!

All our content is free for teachers!

KBI provides a unique and tailored interactive classroom experience that is carefully curated to follow the school curriculum. In particular, our focus is on meeting the learning standards of the grade 5-12 curriculum in science and social studies that relate to:
The immune system, Disease transmission, Immunization, Pandemics, epidemics, and outbreaks; Global inequality issues in health; The role of NGOs; Antibiotic resistance; Evaluating sources …And many other topics!

Click on "How it Works" on the top menu to see the learning modules (and lessons/units available). Critical thinking, diseases, health equity, level of government, global community, immune system, diversity of living things and more.

Select the "Teacher Centre" to find a wealth of lesson plans for all subject areas. E.g., Women's day, colonization, misinformation, critical thinking, evolution etc.

We provide dozens of classroom activities and teacher resources, each of which are paired with an online quiz that students can take on their laptop, tablet, or phone. This two-pronged lesson approach enables teachers to tailor a classroom experience that is supplemented by a fun and interactive experience for the student. Our online quizzes have been developed by health and education professionals, as well as communication experts who have studied the online behaviour of students – as such, they are accurate, informative, but also engaging for the student.

Students explore the physical and psychological effect of stress and tension on human beings. Concepts of stress and stress management are introduced. Students discover how perception serves to fuel a huge industry dedicated to minimizing risk and relieving stress. Students complete a writing activity focused on developing critical thinking skills. Note: The literacy activities for the Mechanics unit are based on physical themes that have broad application to our experience in the world concepts of rhythm, balance, spin, gravity, levity, inertia, momentum, friction, stress and tension.

Students learn how viruses invade host cells and hijack the hosts' cell-reproduction mechanisms in order to make new viruses, which can in turn attack additional host cells. Students also learn how the immune system responds to a viral invasion, eventually defeating the viruses -- if all goes well. Finally, they consider the special case of HIV, in which the virus' host cell is a key component of the immune system itself, severely crippling it and ultimately leading to AIDS. The associated activity, Tracking a Virus, sets the stage for this lesson with a dramatic simulation that allows students to see for themselves how quickly a virus can spread through a population, and then challenges students to determine who the initial bearers of the virus were.