Herpetologists' League
Founded in 1936, the Herpetologists' League (HL) "exists to promote scientific study and conservation of amphibians and reptiles. The primary goals of the League are to support the acquisition of knowledge about these organisms, and to transmit that knowledge through publications, conferences, and symposia." Hosted by the Illinois Natural History Survey, the HL website contains contact information for current League Officers, as well as information about membership, and the upcoming Joint Meetin
Author(s): Creator not set

Cadbury: Maths in the Factory
What kid can resist chocolate? Certainly not many, and this site from the Cadbury Company uses chocolate to entice children to learn about mathematics. Users must apply their knowledge of basic math concepts to solve different problems in the Cadbury factory. The interactive scenarios, which are guided by a group of chocolate cartoon characters, let children practice their skills in arithmetic, measurement, interpretation of data, and geometric objects. There are also sections for teachers and p
Author(s): Creator not set

Gas molecule motion
This page describes the relationship between kinetic energy of molecules and temperature.
Author(s): Edward A. Zobel

Dividing Daffodils
Middle School, difficulty level 4. Help us plant our garden of daffodils.
Author(s): Math Forum,Suzanne Alejandre

Bells in Your Ears
Does sound travel better through solids or gases? This material is part of a series of hands-on science activities designed to arouse student interest. Here the student hangs a metal fork from a pencil using string, and then strikes the fork while the eraser end of the pencil is in his or her ear. The activity includes a description, a list of science process skills and complex reasoning strategies being used, and a compilation of applicable national science standards for grades K-12. Also provi
Author(s): Mid-continent Research for Education and Learning

Atmospheric Processes : Conduction
After participating in this activity, students will be able to explain the process of conduction using a molecular model and explain that different materials conduct at different rates. They will also be able to identify air as a poor heat conductor (an insulator). The instructor guide contains detailed background material, learning goals, alignment to national standards, grade level/time, details on materials and preparation, procedure, assessment ideas, and modifications for alternative learne
Author(s): Creator not set

Popcorn : if you like popcorn, which one would you buy?
This third challenge in the Figure This! list of 80 math challenges directs the student to use popcorn to compare the volumes of tall and short cylinders formed with 8- by 11-inch sheets of paper. The challenge points out that it is important to be able to make visual estimates and find volumes. The web page includes links to a solution hint, the solution, other related math questions, and print resources that contain mathematics activities about packaging and wrapping shapes. The Did You Know a
Author(s): National Action Council for Minorities in Engineer

The Factor Game
Students will use a game setting to identify the properties of prime, composite, abundant, deficient, and perfect numbers. This lesson plan includes the objective, overview of the lesson, needed materials including transparency and worksheets, procedures and rules of the game, extensions and connections, resources, and ideas for discussion.
Author(s): PBS,PBS TeacherSource - Math

Urban Tree Planting: Soil 101
Ever wondered how trees live amidst city sidewalks? This two-minute radio program from the show Pulse of the Planet focuses on the below-ground challenge that urban trees face--city soil. In the program, which is provided here in audio and text formats, a horticulturalist describes the importance of soil and the soil quality and quantity problems often found in cities. She then talks about a mixture that she and fellow researchers at Cornell University have developed called structural soil, whic
Author(s): Pulse of the Planet

Eratosthenes and the mystery of the stades
This article on the history of mathematics explains the famous measurement of the circumference of the Earth made by Eratosthenes, and discusses the mystery surrounding the accuracy of that measurement. A key element in the discussion is the ancient unit of length used in the measurement: the stade. The in-depth article uses diagrams as well as text to make its point.
Author(s): Newlyn Walkup

Plop It!
users click to build dot plots of data and view how the mean, median, and mode change as numbers are added to the plot.
Author(s): The Shodor Education Foundation, Inc.

Quilt blocks: geometry with a cultural warmth
This lesson describes how quilting activities can be used to integrate geometry and lessons about various cultures into the classroom. Suggested ways of creating paper quilt blocks include Hawaiian techniques, where many different blocks are brought together to make a quilt; Amish techniques, where shapes are pieced together in an intricate pattern; and African techniques, which have an emphasis on strip textiles made on hand looms and religious symbols. The geometric concepts of symmetry, tilin
Author(s): Creator not set

The CSI Effect: Changing The Face of Science
Until recently, the vast majority of female student images of scientists were versions of white males working alone in laboratory settings (Barman et al. 1997). As a result, the authors asked the question, ?What phenomenon is responsible for the recent change in female students? mental images of scientists?? They suggest that the popular Crime Scene Investigation (CSI) television series and other television programming have greatly influenced how students, especially female students, perceive sc
Author(s): Arthur Bangert,Richard Jones

Idea Bank : A Big Bang Lab
The authors of "How Far are the Stars," featured in the February issue of The Science Teacher, showed how the measurement of parallax permits scientists to infer astronomic distances. Give your students the chance to make similar inferences through a free module available online that allows students to scale sizes and distances, and then create models from which they calculate inferences that, in simplified form, give results that astronomers obtained similarly in recent times.
Author(s): Walter Scheider

Glue Polymer
What is a polymer, and what are some of its properties? This material is part of a series of hands-on science activities designed to arouse student interest. In this discovery activity students use white glue, water, and borax to make a vinyl polymer and study its properties. The activity includes a description, a list of science process skills and complex reasoning strategies being used, and a compilation of applicable K-12 national science education standards. Also provided are content topics,
Author(s): Mid-continent Research for Education and Learning

Observe forest fires as seen from space
This Earth science resource shows students how atmospheric scientists use infrared imaging to detect and locate forest fires. The introduction explains how visible-light images recorded by satellites are unable to distinguish smoke from clouds. In contrast, infrared imaging, which detects heat, can detect hot spots that indicate the location of forest fires. The resource provides two different sets of satellite pictures. Students are instructed to toggle between the visible-light and infrared im
Author(s): TERC. Center for Earth and Space Science Education

Whats It Like Where You Live? Desert
This site provides excellent background information on deserts. Large print and superb pictures make this site very appealing to younger students. Topics include: What is a Desert Like?, Types of Deserts, What causes Deserts?, Deserts of the World, Desert Plants, Desert Animals, and links to other desert sites.
Author(s): Creator not set

How do you light up your bike without reflectors or lamps?
Bicycle safety is a critical matter. This riddle asks students how they can illuminate their bicycles without using reflectors or headlamps. Before they select their answer, students are given a clue. They read about and watch a video clip of two children's attempts to use glow-in-the-dark materials to light up their bikes. The riddle's final page presents students with three clickable answer choices. Brief feedback is given for the incorrect choices. When students select the best answer, a shor
Author(s): Twin Cities Public Television

Natural Resources, the Environment, and Ecosystems
This collection of teacher guides includes: Ecosystems and Climate, Wildlife - Just One Piece of the Picture, Integrated Pest Management, Soil and Ecosystems, Sustainable Agriculture, and The Web of Life - Understanding Ecosystems. Each guide includes a subject overview, objectives, and student activities. By the end, students should be able to understand the effect of climate on ecosystems; the interrelationships of animals with components of their natural ecosystem; how ecosystems benefit from
Author(s): Creator not set

Factor tree (grades 6-8)
This virtual manipulative challenges the learner to find the prime factors for a pair of numbers. The factors for each number are displayed in a tree diagram from which the student drags the factors to the appropriate areas of a Venn diagram. The Venn diagram offers a useful visual display showing unique factors and common factors for the original pair of numbers. Using the display, the learner must find the pair's least common multiple (LCM) and greatest common factor (GCF). Buttons allow users
Author(s): Utah State University. National Library of Virtual