This tool aids in investigating relationships between interacting data elements or data clusters analysis in genetic mapping and in competition between different groups of organisms and their resource requirements.
Students will construct bird nests and birdhouses. The students will research a bird of their choice in order to design a house that will meet that bird's specific needs. This activity works well in conjunction with a 9th-12th wood shop class whose students would partner up with your class, however this is not a necessity.
Which tool is the right tool for the job? This collection of images features a series of cutting tools performing the tasks for which they were designed.
Simple machines are devices with few or no moving parts that make work easier. Students are introduced to the six types of simple machines the wedge, wheel and axle, lever, inclined plane, screw, and pulley in the context of the construction of a pyramid, gaining high-level insights into tools that have been used since ancient times and are still in use today. In two hands-on activities, students begin their own pyramid design by performing materials calculations, and evaluating and selecting a construction site. The six simple machines are examined in more depth in subsequent lessons in this unit.
Simple machines are devices with few or no moving parts that make work easier, and which people have used to provide mechanical advantage for thousands of years. Students learn about the wedge, wheel and axle, lever, inclined plane, screw and pulley in the context of the construction of a pyramid, gaining insights into tools that have been used since ancient times and are still important today. Through numerous hands-on activities, students imagine themselves as ancient engineers building a pyramid. Student teams evaluate and select a construction site, design a pyramid, perform materials calculations, test a variety of cutting wedges on different materials, design a small-scale cart/lever transport system to convey building materials, experiment with the angle of inclination and pull force on an inclined plane, see how a pulley can change the direction of force, and learn the differences between fixed, movable and combined pulleys. While learning the steps of the engineering design process, students practice teamwork, creativity and problem solving.
The shared set of genes for body segments, possessed by all animals, are discussed in this video segment from Evolution: "Great Transformations."
Use this chart to decide how "open" you want your OER to be, and based upon this, to select the most appropriate licence.
Remember to repeat this process for each element of your OER. Once you have selected your licence, review the resources indicated to ensure the various elements of your OER can be blended together.
Phylogenetic Investigator (PI) is a software package designed to facilitate creative problem-solving in phylogenetic analysis for the purpose of teaching and learning phylogenetic inference. Users can identify characters and states, polarize characters, and engage in directed-search phylogenetic tree construction.
PI also allows the user to
* make inferences and represent them one step at a time
* vary representational features of their trees (such as angle of divergence and time between speciation events)
* create reticulate tree patterns
* view all of the character transformations at one time.
In addition, PI can generate plausible data stochastically for modeling and practicing tree construction.
Students learn how simple machines, including wedges, were used in building both ancient pyramids and present-day skyscrapers. In a hands-on activity, students test a variety of wedges on different materials (wax, soap, clay, foam). Students gain an understanding of how simple machines are used in engineering applications to make our lives and work easier.
Students at Miles College in Birmingham developed this "crib sheet" and questionnaire to help black citizens become registered voters and to document racial discrimination in the voting process in the 1950s.
This interactive key to deciduous trees is based on winter twig images and is modified from a dichotomous key by E. Lucy Braun.
Winter Twig Key combines side by side images of twigs with contrasting features emphasized by text and field marks. You choose the image that has the general feature most like the twig you are trying to identify and click on the image to display a new page with more choices until an identification to genus is reached.
At the top of each page, the previous descriptive feature chosen is restated to make rechecking easier if neither of the new features seem to fit your twig. A Back button allows you to retrace your steps if you wish to examine prior choices. Hypertext definitions are available for terms that you may be unfamiliar with. An optional tutorial on twig features is also provided.
