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555 Timer

(Complete Item Description)

Abstract:: Many systems involve some type of time keeping. By using 555 integrated circuit in astable state it is easy to design and make accurate and cheap timing circuit (e.g., alarm circuit, counting circuit, sensing circuit, etc.) The working principle of this 555 IC in astable state is supported by the following formulae: Timing period, Timing=(R1+2R2) C/1.44.

Subject:: Science and Technology
Grade Level:: Secondary
Collection:: Learn Activity (University of Hong Kong)

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Another way of viewing the world

(Complete Item Description)

Abstract:: Here we introduce another way of viewing phenomenon in the world. Instead of seeing things in the time domain, we introduce the concept of the frequency domain and how to go from on to the other, as well as interesting applications.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Connexions

Evaluated

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Bianca Goes to the Movie

(Complete Item Description)

Abstract:: This Cyberchase video segment features Bianca, who must figure out the fastest route to a movie premiere.

Subject:: Mathematics and Statistics
Grade Level:: Primary, Secondary
Collection:: Teachers' Domain

Evaluated

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Calculating Speed

(Complete Item Description)

Abstract:: In this Cyberchase video segment, the CyberSquad calculates the speed of each broom.

Subject:: Mathematics and Statistics
Grade Level:: Primary, Secondary
Collection:: Teachers' Domain

Evaluated

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Clock Counting

(Complete Item Description)

Abstract:: Students will practice telling time.

Subject:: Mathematics and Statistics
Grade Level:: Primary
Collection:: Instructional Architect

Evaluated

Color-Coded Time

(Complete Item Description)

Abstract:: This lesson introduces telling time to the minute using the analog and digital clocks. The hands are color-coded to assist with hour and minute hand discrimination. The student will use the time on the digital clock, which can then be transferred to the more difficult analog clock.

Subject:: Mathematics and Statistics
Grade Level:: Primary
Collection:: LEARN NC Lesson Plans

Computational Mechanics of Materials, Fall 2003

(Complete Item Description)

Abstract:: 16.225 is a graduate level course on Computational Mechanics of Materials. The primary focus of this course is on the teaching of state-of-the-art numerical methods for the analysis of the nonlinear continuum response of materials. The range of material behavior considered in this course will include: linear and finite deformation elasticity, inelasticity and dynamics. Numerical formulation and algorithms will include: Variational formulation and variational constitutive updates, finite element discretization, error estimation, constrained problems, time integration algorithms and convergence analysis. There will be a strong emphasis on the (parallel) computer implementation of algorithms in programming assignments. At the beginning of the course, the students will be given the source of a base code with all the elements of a finite element program which constitute overhead and do not contribute to the learning objectives of this course (assembly and equation-solving methods, etc.). Each assignment will consist of formulating and implementing on this basic platform, the increasingly complex algorithms resulting from the theory given in class, as well as in using the code to numerically solve specific problems. The application to real engineering applications and problems in engineering science will be stressed throughout.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: MIT OpenCourseWare

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Continuous-Time Fourier Transform

(Complete Item Description)

Abstract:: Introduction to the continuous-time Fourier Transform.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Post-secondary
Collection:: Connexions

Evaluated

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Cooking Contest

(Complete Item Description)

Abstract:: In this Cyberchase video segment, Matt uses subtraction to help Digit figure out how much time he has left in a cooking contest with Hacker.

Subject:: Mathematics and Statistics
Grade Level:: Primary
Collection:: Teachers' Domain

Dance Theory and Composition, Fall 2003

(Complete Item Description)

Abstract:: Explores aesthetic and technical underpinnings of contemporary dance composition. Basic compositional techniques discussed and practiced with an emphasis on principles such as weight, space, time, effort, and shape. Principles of musicality considered and developed by each student. Working together, students create short compositions to help them understand the range of possibilities available when working with the medium of the human body. Selected viewing and reading exercises augment classroom work. Class attends at least two professional dance events in the Boston area.

Subject:: Arts
Grade Level:: Post-secondary
Collection:: MIT OpenCourseWare

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Deep Time

(Complete Item Description)

Abstract:: This interactive timeline from Evolution offers a visual representation of the major geological changes, transformations, and extinction episodes in the 4.6-billion-year history of Earth.

Subject:: Science and Technology
Grade Level:: Primary, Secondary
SubTopics:: Endangered Species , Industrial and Agricultural Impacts
Collection:: Teachers' Domain

Describing motion along a line

(Complete Item Description)

Abstract:: Motion is vital to life, and to science. This unit will help you to understand why classical motion is probably the most fundamental part of physics. You will examine motion along a line and the ways in which such motion can be represented, through the use of graphs, equations and differential calculus.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open University OpenLearn

Driving Through Geologic Time - An analogy

(Complete Item Description)

Abstract:: This activity uses an analogy to illustrate the scale of geologic time and our limited view of the Earth's history. It relates the history of the Earth to a drive across the country. The drive is 4560 km (rough distance between Washington D.C. and Seattle), with 1 km equaling one million years of Earth's history. This analogy is used by the author as a springboard to talk about the limits of our personal perceptions and experiences when making conclusions. Learning goals, context for use, teaching tips, materials, assessment tips and related resources are provided.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: DLESE Community Service Center (SERC)

Evaluated

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An Egyptian Clock

(Complete Item Description)

Abstract:: The CyberSquad must construct a clock of sorts in order to keep track of the amount of time they have to rescue Dr. Marbles in this video segment from Cyberchase.

Subject:: Mathematics and Statistics
Grade Level:: Primary
Collection:: Teachers' Domain

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Einstein

(Complete Item Description)

Abstract:: This Web site, created to complement the Einstein exhibit, looks at the life and contributions of this extraordinary scientist and humanitarian.

Subject:: Science and Technology
Grade Level:: Primary, Secondary
Collection:: American Museum of Natural History

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Einstein Books for Kids

(Complete Item Description)

Abstract:: This OLogy reference list has 10 kid-friendly books on physics. A short description is given for each title, along with author name and publisher.

Subject:: Science and Technology
Grade Level:: Primary
Collection:: American Museum of Natural History

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Einstein in Time

(Complete Item Description)

Abstract:: This fun Web site is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, they are introduced to Einstein's scientific and humanitarian pursuits with two engaging, kid-friendly sections:Einstein in Time, a fascinating look at the major events in his life, presented in a time-line. Everyday Einstein: Humanitarian, a quick overview of how he used his fame to draw attention to the things he believed in.

Subject:: Science and Technology
Grade Level:: Primary
Collection:: American Museum of Natural History

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Encoding Information in the Frequency and Time Domains

(Complete Item Description)

Abstract:: This module discusses the Fourier series encoding scheme.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Connexions

Evaluated

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Estimating Distance and Travel Time

(Complete Item Description)

Abstract:: In this Cyberchase video segment, the CyberSquad estimates how much air supply they will need to complete an underwater mission.

Subject:: Mathematics and Statistics
Grade Level:: Primary, Secondary
Collection:: Teachers' Domain

Evaluated

Everyday, Ordinary Olympics

(Complete Item Description)

Abstract:: Students will use a stopwatch to time themselves performing in various events, record data, and then compare and order decimals to determine bronze, silver and gold medal winners.

Subject:: Mathematics and Statistics
Grade Level:: Primary
Collection:: LEARN NC Lesson Plans

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