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Battery-Resistor Circuit
Conditions of Use:
No Strings Attached
Rating

Look inside a resistor to see how it works. Increase the battery voltage to make more electrons flow though the resistor. Increase the resistance to block the flow of electrons. Watch the current and resistor temperature change.

Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Sam Reid
Date Added:
11/20/2008
Classifying Animals by Appearance Versus DNA Sequence
Conditions of Use:
Remix and Share
Rating

The topic of this video module is how to classify animals based on how closely related they are. The main learning objective is that students will learn how to make phylogenetic trees based on both physical characteristics and on DNA sequence. Students will also learn why the objective and quantitative nature of DNA sequencing is preferable when it come to classifying animals based on how closely related they are. Knowledge prerequisites to this lesson include that students have some understanding of what DNA is and that they have a familiarity with the base-pairing rules and with writing a DNA sequence.

Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Megan E. Rokop
Date Added:
06/11/2012
مختبر فاراداي الكهرومغناطيسي
Conditions of Use:
بلا تقييدات
Rating

العب بقضيب مغناطيسي وبلفائف لمعرفة المزيد عن قانون فاراداي. قم بتحريك شريط مغناطيسي بالقرب من واحد أو اثنين من اللفائف لجعل المصباح الكهربائي يتوهج. يظهرالمتر الاتجاه وشدة التيار. شاهد خطوط المجال المغناطيسي أو استخدم المترلاظهار الاتجاه وشدة التيار. يمكنك أيضا اللعب في المغناطيسات الكهربائية, المولدات والمحولات!

نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Archie Paulson
Carl Wieman
Chris Malley
Danielle Harlow
Kathy Perkins
Michael Dubson
Date Added:
10/22/2006
The Flaws of Averages
Conditions of Use:
Remix and Share
Rating

This learning video presents an introduction to the Flaws of Averages using three exciting examples: the ''crossing of the river'' example, the ''cookie'' example, and the ''dance class'' example. Averages are often worthwhile representations of a set of data by a single descriptive number. The objective of this module, however, is to simply point out a few pitfalls that could arise if one is not attentive to details when calculating and interpreting averages. The essential prerequisite knowledge for this video lesson is the ability to calculate an average from a set of numbers. During this video lesson, students will learn about three flaws of averages: (1) The average is not always a good description of the actual situation, (2) The function of the average is not always the same as the average of the function, and (3) The average depends on your perspective. To convey these concepts, the students are presented with the three real world examples mentioned above.

Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Daniel Livengood
MIT BLOSSOMS
Rhonda Jordan
Date Added:
06/02/2012
خصائص الغاز
Conditions of Use:
بلا تقييدات
Rating

قم بضخ جزيئات الغاز في صندوق وشاهد ما سيحدث عند تغيير الحجم، عند إضافة أو إزالة الحرارة وعند تغيير الجاذبية، وأكثر من ذلك. قم بقياس درجة الحرارة والضغط، واكتشف كيف تختلف خصائص الغاز في علاقتها ببعضها البعض.

نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Carl Wieman
Danielle Harlow
Jack Barbera
Kathy Perkins
Linda Koch
Michael Dubson
Ron LeMaster
Date Added:
10/05/2006
Lunar Lander
Conditions of Use:
No Strings Attached
Rating

Can you avoid the boulder field and land safely, just before your fuel runs out, as Neil Armstrong did in 1969? Our version of this classic video game accurately simulates the real motion of the lunar lander with the correct mass, thrust, fuel consumption rate, and lunar gravity. The real lunar lander is very hard to control.

Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Michael Dubson
Date Added:
01/26/2007
My Solar System
Conditions of Use:
No Strings Attached
Rating

Build your own system of heavenly bodies and watch the gravitational ballet. With this orbit simulator, you can set initial positions, velocities, and masses of 2, 3, or 4 bodies, and then see them orbit each other.

Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Danielle Harlow
Michael Dubson
Mindy Gratny
Date Added:
11/15/2007
Mystery of the Missing Hummingbirds - Arabic Language Version
Conditions of Use:
Read the Fine Print
Rating

Join Anita, Simon and Dennis and the rest of Ms. Patel's class as they research when the hummingbirds have gone and when they might return. Download the Seasons Module storybook and learning activities!

Material Type:
Activity/Lab
Reading
Provider:
The GLOBE Program
Provider Set:
Globe Program
Date Added:
06/19/2013