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تحلل ألفا
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قراءة النص المطبوع بخط رفيع
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شاهد هروب جسيمات ألفا من نواة البولونيوم، مسببة تحلل ألفا المشعة. شاهد كيف أن عدد مرات التسوس العشوائي يرتبط بنصف العمر.

الموضوع:
Physical Science
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
09/02/2012
لعبة شبكة أنتاركتيكا الغذائية
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في هذه اللعبة التفاعلية المأخوذة عن مختبر بيجيلو لعلوم المحيطات، قُم ببناء شبكة غذائية توضح مسار تدفق الطاقة داخل أحد الأنظمة البيئية للقارة القطبية الجنوبية المتجمدة (أنتاركتيكا)، وكذلك توضح العلاقة بين المفترسات وفرائسها.

الموضوع:
Life Science
علم البيئة
Forestry and Agriculture
نوع المادة:
Activity/Lab
تفاعلية
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media Common Core Collection
مجال المعلمين
المؤلف:
National Science Foundation
WGBH Educational Foundation
Date Added:
08/09/2007
The Art of Approximation in Science and Engineering: How to Whip Out Answers Quickly
Conditions of Use:
Remix and Share
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The purpose of this learning video is to show students how to think more freely about math and science problems. Sometimes getting an approximate answer in a much shorter period of time is well worth the time saved. This video explores techniques for making quick, back-of-the-envelope approximations that are not only surprisingly accurate, but are also illuminating for building intuition in understanding science. This video touches upon 10th-grade level Algebra I and first-year high school physics, but the concepts covered (velocity, distance, mass, etc) are basic enough that science-oriented younger students would understand. If desired, teachers may bring in pendula of various lengths, weights to hang, and a stopwatch to measure period. Examples of in- class exercises for between the video segments include: asking students to estimate 29 x 31 without a calculator or paper and pencil; and asking students how close they can get to a black hole without getting sucked in.

Subject:
Engineering
Algebra
Numbers and Operations
Physics
Material Type:
Lecture
Provider:
MIT Learning International Networks Consortium
Provider Set:
M.I.T. Blossoms
Author:
Stephen M. Hou
Date Added:
06/02/2012
Astrophysics Science and Technology Project: Integrating Research and Education (ASPIRE)
Conditions of Use:
Read the Fine Print
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The ASPIRE Lab is now one of the most innovative and interactive science education websites available on the Internet. You will find not only fun interactive labs, but well designed and produced curriculum content, created by teachers for teachers. The powerful combination of inquiry-based content, along with interactive, hands-on labs provides a powerful visualization tool for you and your students to use. Best of all, the ASPIRE Lab is free!

Subject:
Physics
Material Type:
Activity/Lab
Provider:
University of Utah
Provider Set:
ASPIRE
Date Added:
10/13/2005
البالونات و الطفو
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قراءة النص المطبوع بخط رفيع
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قم بالتجربة مع بالون هيليوم، منطاد ذو هواء ساخن، أو كرة صلبة مليئة بالغازات المختلفة. اكتشف ما الذي يجعل بعض البالونات تطفو ويجعل البعض الاخر يغرق.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Danielle Harlow
Kathy Perkins
Ron LeMaster
Date Added:
07/02/2009
البالونات والكهرباء الثابتة
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لماذا يلتصق البالون بكنزتك؟ قم بفرك البالون بكنزتك, ثم دع البالون و ستجده يطير و يلتصق بالكنزة. شاهد الشحنات على الكنزة, على البالون, و على الجدار.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Sam Reid
Wendy Adams
Date Added:
07/02/2008
هيكل المجموعة
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قم باستكشاف أصل مجموعات الطاقة الموجودة في بلورات من الذرات. يحدد هيكل هذه المجموعات كيفية توليد المواد للكهرباء.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Chris Malley
Kathy Perkins
Sam McKagan
Date Added:
07/02/2010
"Baseketball"
Conditions of Use:
Remix and Share
Rating

This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying. When we tried this trick on the Exploratorium's exhibit floor, we gathered a crowd of visitors who wanted to know what we were doing. We explained that we were engaged in serious scientific experimentation related to energy transfer. Some of them may have believed us. If you'd like to go into the physical calculations of this phenomenam, see the related resource "Bouncing Balls" - it's the same activity but with the math explained.

Subject:
Physics
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Paul Doherty
The Exploratorium
Date Added:
11/07/2012
بطارية-دائرة المقاوم
Conditions of Use:
بلا تقييدات
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إنظر داخل المقاوم لترى كيف يعمل. قم بزيادة جهد البطارية لزيادة تدفق الإلكترونات على الرغم من وجود المقاوم. قم بزيادة مستوى المقاومة لمنع تدفق الإلكترونات. شاهد درجة الحرارة الحالية و التغير في درجة حرارة المقاوم.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Sam Reid
Date Added:
11/20/2008
جهد بطارية
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انظر داخل البطارية لترى كيف تعمل. قم بتحديد جهد البطارية وتحرك الأرقام الصغيرة اللاصقة الشحنات من أحد طرفي البطارية للاخر. يخبرك الفولتميتر عن جهد البطارية الناتجة عن ذلك.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Sam Reid
Date Added:
07/02/2008
الطفو (عربي)
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قراءة النص المطبوع بخط رفيع
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متى تطفو الأجسام ومتى تغطس؟ تعلم كيف يعمل الطفو مع الكتل. تظهر السهام القوى المطبقة، ويمكنك تعديل خصائص الكتل والسوائل.

الموضوع:
الفيزياء
نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Patricia Loblein
Sam Reid
Wendy Adams
Date Added:
10/01/2010
Can Earthquakes Be Predicted?
Conditions of Use:
Remix and Share
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This learning video uses a simple analog setup to explore why earthquakes are so unpredictable. The setup is simple enough that students should be able to assemble and operate it on their own with a teacher's supervision. The teaching approach used in this module is known as the 5E approach, which stands for Engagement, Exploration, Explanation, Elaboration, and Evaluation. Over the course of this lesson, the basic mechanisms that give rise to the behavior of the simple analog system are explained, and further elaboration helps the students to apply their understanding of the analog system to complex fault systems that cause earthquakes

Subject:
Geology
Material Type:
Lecture
Provider:
M.I.T.
Provider Set:
M.I.T. Blossoms
Author:
Zach Adam
Date Added:
06/11/2012
Catalytic Converter
Conditions of Use:
Remix and Share
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This video lesson aims to motivate students about chemistry and to raise their awareness about how chemistry helps in solving certain environmental problems. In this lesson, the air pollution problem created by cars and other vehicles is presented. The lesson will highlight causes of this problem, harmful products from it and possible solutions. There will also be discussion of ways to convert the pollutants produced by burning oil in vehicles into more friendly products.

Subject:
Environmental Science
Chemistry
Material Type:
Lecture
Provider:
M.I.T.
Provider Set:
M.I.T. Blossoms
Author:
Prof. Mohammad El-Khateeb
Date Added:
06/11/2012
Conductivity (AR)
Conditions of Use:
Read the Fine Print
Rating

Experiment with conductivity in metals, plastics and photoconductors. See why metals conduct and plastics don't, and why some materials conduct only when you shine a flashlight on them.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Sam McKagan
Sam Reid
Wendy Adams
Date Added:
07/01/2004
Daisy World Model
Conditions of Use:
Remix and Share
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The Daisy World model is intended to illustrate a mechanism through which biota might optimize their environment by means of negative feedback. The model offers a very simplified approach to a feedback system and can provide an introductory lesson in how models work. The aim of the model is to implement and test a mathematical model describing possible influence of biota on an abiotic (climatic) system using GAWK and GNUPLOT. The model tests the hypothesis that biota can influence the planetary environment. This site contains the online model of Daisy World for use in introductory courses as well as an assignment based on the model.

Subject:
Biology
Atmospheric Science
Material Type:
Interactive
Reading
Teaching/Learning Strategy
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Starting Point (SERC)
Author:
Robert Mackay
Date Added:
10/23/2006
Data in the Classroom - Ocean Acidification
Conditions of Use:
No Strings Attached
Rating

Investigate ocean acidification through five activities at different levels to learn about ocean acidification using real data. Curriculum Guide available on website.The NOAA Ocean Data Education (NODE) Project is developing curriculum for grades 6-8 designed to help teachers and students use real scientific data to explore dynamic Earth processes and understand the impact of environmental events on a regional or global scale.

Subject:
Oceanography
Material Type:
Activity/Lab
Interactive
Lesson Plan
Teaching/Learning Strategy
Provider:
Our Changing Oceans and Estuaries
The NOAA Ocean Data Education (NODE) Project
Author:
the NOAA Ocean Data Education (NODE) Project by Caroline Joyce
Todd Viola and Andrew Amster in collaboration with the NOAA Coral Reef Conservation Program and the National Oceanographic Data Center.
Date Added:
11/14/2012
Density (AR)
Conditions of Use:
Read the Fine Print
Rating

Why do objects like wood float in water? Does it depend on size? Create a custom object to explore the effects of mass and volume on density. Can you discover the relationship? Use the scale to measure the mass of an object, then hold the object under water to measure its volume. Can you identify all the mystery objects?

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Patricia Loblein
Sam Reid
Wendy Adams
Date Added:
09/01/2010
Double Wells and Covalent Bonds
Conditions of Use:
No Strings Attached
Rating

Explore tunneling splitting in double well potentials. This classic problem describes many physical systems, including covalent bonds, Josephson junctions, and two-state systems such as spin 1/2 particles and ammonia molecules.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Chris Malley
Kathy Perkins
Sam McKagan
Date Added:
10/04/2006