The Airborne Infection SEIR Model examines the time evolution of four populations in an epidemic: those who are susceptible to infection, those who have been exposed but do not yet exhibit symptoms, those who are infected and contagious, and those who have recovered from the infection. The SUSCEPTIBLE-EXPOSED-INFECTED-REMOVED (SEIR) Model shows that infection can spread throughout a population in just a matter of days. Infections and viruses can be transmitted relatively easily, or can be prevented all together if certain conditions are satisfied. This model examines the spread of infection in indoor environments and the parameters that shape its transmission. The Airborne Infection SEIR Model was developed using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed. You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

Investigate a flower's power of marketing by making an imitation flower that successfully signals a bee (or other pollinator of your choice) to visit. Try to determine what characteristics will attract a pollinator to your flower. Also available as an online game.

In this activity, learners make slides of onion cells and their own cheek cells. Use this lab to teach learners how to prepare microscope slides and use a microscope. Learners will also identify differences between plant and animal cells. Note: a microscope is required for this activity, but is not included in the cost of materials.

In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares. People with different sized heights and arm spans are known as rectangles. Learners measure and analyze the body shapes of family and friends.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners. Even thought the pipe cleaners are the same length, learners will discover that one appears shorter than the other.

In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control. After about 15-30 minutes, the carrots with salt become flexible and water can be seen in the bag. Extensions include measuring the amount of water lost from the carrots, varying the salt solutions, and investigating other liquids, vegetables or solids. Part of the "No Hassle Messy Science with a Wow" activity guide by OMSI, where all activities use only household materials.

Curricular materials designed to teach parallel computational modeling to undergraduate or graduate students in science and other STEM disciplines. The module begins with the construction of a cellular automaton model of microbial biofilms using Mathematica. This model is then re-implemented with C and parallelized using MPI.

The investigation of a wide variety of medical and bio-scientific problems through the application of computational science techniques.

This activity is intended to familiarize learners with native Houston birds, introduce learners to tools biologists use in the field, and to enhance their observation skills. In this activity, learners will create a field guide based on native Houston birds and will use this field guide to identify birds at school and home. The lesson guide includes background information, questions to ask, extensions and resources.

Join us on a special trip up to Bathurst Island to record birdsongs, and learn about how you can use bird observations to create scientific inquiry in your classroom using ebird.org and birds.cornell.edu/birdsleuth.

In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

This is an assessment activity for the The Cosmic Ray Telescope for the Effects of Radiation (CRaTER) educational kit. Learners will make a poster that explains possible origins of cosmic rays, how they affect people, and what protects us here on Earth. Alternately, they will make a poster describing CRaTER’s goal and how it works.

At LLNL, physicists, chemists, biologists, engineers, computer scientists and other researchers work together in multidisciplinary teams to achieve technical innovations and scientific breakthroughs that make possible solutions to critical problems of national and global importance. Our scientists push the frontiers of knowledge to build the scientific and technological foundation that will be needed to address the national security issues of the future.

In this "Sid the Science Kid" activity, learners get their hands dirty by playing in a container of soil. Then they compare the effectiveness of cleaning their hands with just a paper towel vs. soap and water. Use this activity to introduce the importance of hand-washing and cleanliness. This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this activity, learners conduct the "Stroop Effect" test and explore what happens when they try to complete two simple tasks at the same time. Use this activity to explain how the brain can get confused when it tries to process two different stimuli at the same time.

This activity models the mass coral spawning event that takes place at Flower Garden Banks National Marine Sanctuary every August. The result is like a snow globe in which the думsnowдуќ floats up instead of down, and the scene is a model of a coral reef, complete with Christmas tree worms.

In this activity, learners investigate how increased carbon dioxide (CO2) emissions from the burning of fossil fuels is changing the acidity (pH) of the ocean and affecting coral reefs and other marine animals. Learners conduct an experiment to see whether CO2 is making the oceans more basic or acidic.

In this "Sid the Science Kid" activity, learners explore the effects of decay by comparing and contrasting something (an old pumpkin) that's decayed with the same thing before it changes (a fresh pumpkin). Use this activity during the Fall and Halloween! This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this activity, learners use household materials to investigate and explore their ability to smell an odor. Learners compare and contrast results to determine if some individuals have a better sense of smell than others. Learners also observe the Maillard reaction and how different odor molecules are released into the air. Note: Since experiment #2 requires the use of a hot stove and skillet, we recommend that an adult conducts it as a demonstration, or that the appropriate safety materials are used and safety guidelines are discussed prior to the experiment.

In this activity about dinosaurs and survival, learners use scrap materials to create a miniature dinosaur habitat that includes a food source, water source, and shelter. This resource includes definitions of key words (habitat, carnivores, herbivores, omnivores, extinct) as well as discussion questions to further learning.