Developed for third grade. The students will be given an introduction to tastebuds, focusing on the different types of tastebuds, what they taste, and where they are located on the tongue. They will do this by sampling four different tastes (lemon - sour, sugar - sweet, salt - salty, and tonic water - bitter) and determining which can be tasted the best in what areas of the tongue. Given a diagram that maps out the main regions of the tongue, the students will indicate which area is designated f
Two-Type Poisson Experiment
This resource consists of a Java applet and expository text. The applet illustrates the arrivals in a Poisson process where each arrival, independently, is one of two types. The time interval, the rate of the process, and the probability that an arrival is type 1 can be varied. The applet illustrates "splitting" a Poisson process.
Bivariate Uniform Experiment
This resource consists of a Java applet and expository text. The Java applet illustrates the bivariate uniform distribution on three types of regions: a square, a circle, and a triangle. Simulated points from the distribution are shown as dots in a scatterplot.
Types of Decay
Decay is the process of organic rotting. Decay can take many different forms, such as tooth decay. Many times, you can see the visible effects of decay. Some types of decay can be prevented or can be fought against; others are inevitable. Microbes are responsible for decay in fruits, vegetables, and ...
View of the vertical stratification of microhabitats in the Mojave desert
The microhabitats within the desert habitat vary by soil type and micro climate. These differences account for the different types of vegetation in each microhabitat.
Zebra fish blood stream to heart
Arteries, veins and the heart are the organs that make up the circulatory system, an organ system. Organs are made up of several types of tissues.
This USGS site explains what an aquifer is and defines the different types of aquifers based on six principal lithologies; sandstone, carbonate, sandstone-carbonate, igneous and metamorphic, sand and gravel, and other rock types. The site features maps and descriptions of the major aquifers in the United States as well as general information about groundwater occurrence and quality. The site also provides links to additional maps and data about specific aquifers across the nation.
USGS Bedform Sedimentology
This site presents a collection of photographs, short movies, classifications, and computer-generated images for identifying various types of bedforms. Viewing of movies and 3D dynamic computer-modeled bedforms allows students to observe the creation, internal structure, and migration of bedforms through time. Photographs depict these processes in the real world. In addition, software for simulating ripple and dune bedforms and crossbedding is available for a free download. The site also feature
The USGS has developed a national inventory of significant topographic changes based on seamless multitemporal elevation data and land cover data. The National Elevation Dataset (NED) and the Shuttle Radar Topography Mission (SRTM) data form a unique pair of seamless elevation datasets that can be used to detect and analyze 20th century topographic surface changes in the United States. The need for more comprehensive information on the nature and extent of recent human geomorphic activity led t
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: Temperature and the Solubility of Salts, Determining the Solubility Product, Determining the Solubility of Cup
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: Determining the Heat of Reactions in Aqueous Solution, Coffee, Coolant, Camping, ATP Reaction (Thermochemistry
Energy of Motion
By taking a look at the energy of motion all around us, students learn about the types of energy and their characteristics. They first learn about the two simplest forms of mechanical energy: kinetic and potential energy, as illustrated by pendulums and roller coasters. They come to understand that ...
Engineering for the Earth
Young students are introduced to the complex systems of the Earth through numerous lessons on the Earth's natural resources, processes, weather, climate and landforms. Key earth science topics include rocks, soils and minerals, water and natural resources, weather patterns and climatic regions, wind, erosion, landforms, and the harvesting of fossil fuels all presented from an engineering point-of-view. (See the Unit Overview section for a list of topics by lesson.) Through many hands-on activiti
The Growling Stomach
In this lesson, the students will investigate what types of plants and insects they could eat to survive in the Amazon. They will research various plants and/or insects and identify characteristics that make them edible or useful for the trip. The students will create posters and present their findings to the class.
A House is a House for Me
Students brainstorm and discuss the different types of materials used to build houses in various climates. Small models of houses are built and tested against different climates.
Engineering and the Human Body
The Engineering and the Human Body unit covers the broad spectrum of topics that make-up our very amazing human body. Students are introduced to the space environment and learn the major differences between the environment on Earth and that of outer space. The engineering challenges that arise because of these discrepancies are also discussed. Then, students dive into the different components that make up the human body: muscles, bones and joints, the digestive and circulatory systems, the nervo
In this unit, students first are introduced to the historical motivation for space exploration. They learn about the International Space Station and are introduced to new and futuristic ideas that space engineers are currently working on to propel space research. Next, students learn about the physical properties of the Moon. They are asked to think about what types of products engineers would need to design for us to live comfortably on the Moon. Lastly, students learn some basic facts about as
As Charlotte uses her web to communicate, the students will also create a web to send a small message. The students will learn how a spider creates its web, and about the different types of webs spiders make. With this knowledge, the students will design and create their own web and incorporate a message.
Tower Investigation and the Egg
Towers have been a part of developed society for centuries. Towers serve a variety of purposes, from lookouts to cellular towers. In this activity student groups will build three types of towers, engineering them to hold an egg one foot high for 15 seconds.
Weather and Atmosphere
In this unit, students learn the basics about weather and the atmosphere. They investigate materials engineering as it applies to weather and the choices available to us for clothing to counteract the effects of weather. Students have the opportunity to design and analyze combinations of materials for use in specific weather conditions. In the next lesson, students also are introduced to air masses and weather forecasting instrumentation and how engineers work to improve these instruments for at