This course examines the growing importance of medicine in culture, economics and politics. It uses an historical approach to examine the changing patterns of disease, the causes of morbidity and mortality, the evolution of medical theory and practice, the development of hospitals and the medical profession, the rise of the biomedical research industry, and the ethics of health care in America.

Students demonstrate the erythrocyte sedimentation rate test (ESR test) using a blood model composed of tomato juice, petroleum jelly and olive oil. They simulate different disease conditions, including rheumatoid arthritis, anemia, leukocytosis and sickle-cell anemia, by making appropriate variations in the particle as well as in the fluid matrix. Students measure the ESR for each sample blood model, correlate the ESR values with disease conditions and confirm that diseases alter blood composition and properties. During the activity, students learn that when non-coagulated blood is let to stand in a tube, the red blood cells separate and fall to the bottom of the tube, resulting in a sediment and a clear liquid called serum. The height in millimeters of the clear liquid on top of the sediment in a time period of one hour is taken as the sedimentation rate. If a disease is present, this ESR value deviates from the normal, disease-free value. Different diseases cause different ESR values because blood composition and properties, such as density and viscosity, are altered differently by different diseases. Thus, the ESR test serves as a real-world diagnostic screening test to identify indications of the presence of any diseases in people.

Los modelos de datos son mecanismos que permiten la abstracción y representación de un dominio, mediante un conjunto de reglas y símbolos pertenecientes a un lenguaje de modelado que es conforme al modelo. Un modelo puede definirse como la abstracción que permite representar los diferentes elementos pertenecientes a un dominio del negocio, sus relaciones y asociaciones, conforme sucedería en el mundo real.

This task asks students to find a linear function that models something in the real world. After finding the equation of the linear relationship between the depth of the water and the distance across the channel, students have to verbalize the meaning of the slope and intercept of the line in the context of this situation.

This short video and interactive assessment activity is designed to teach fifth graders about distances between points on multiple routes (metric units).

This short video and interactive assessment activity is designed to teach fourth graders about distances between points on one route (metric units).

This short video and interactive assessment activity is designed to teach fifth graders about measurement: greater than or less than a yard?.

The purpose of this task is meant to reinforce students' understanding of rational numbers as points on the number line and to provide them with a visual way of understanding that the sum of a number and its additive inverse (usually called its "opposite") is zero.

This task asks students to find equivalent expressions by visualizing a familiar activity involving distance. The given solution shows some possible equivalent expressions, but there are many variations possible.

Students pass around and distort messages written on index cards to learn how we use signals from GPS occultations to study the atmosphere. The cards represent information sent from GPS satellites being distorted as they pass through different locations in the Earth's atmosphere and reach other satellites. Analyzing GPS occultations enables better global weather forecasting, storm tracking and climate change monitoring.

This short video and interactive assessment activity is designed to teach fifth graders about dividing decimals by multiples of 10.

This short video and interactive assessment activity is designed to give fifth graders an overview of decimal division.

This short video and interactive assessment activity is designed to teach third graders about dividing by 1 digit numbers with illustrations.

This short video and interactive assessment activity is designed to teach fourth graders about dividing 2 digits by 2 digits with a remainder.

This short video and interactive assessment activity is designed to teach fifth graders about dividing 2 digits by 2 digits with a remainder.

This short video and interactive assessment activity is designed to teach fourth graders about the relationship between dividend, divisor and quotient.

This short video and interactive assessment activity is designed to teach third graders about finding the remainder given the total number and number of groups.

This short video and interactive assessment activity is designed to teach fourth graders about estimating the number needed using remainders.

This short video and interactive assessment activity is designed to teach third graders about grouping with illustrations II - word problems.