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أداة رسم حساب التفاضل والتكامل
Conditions of Use:
بلا تقييدات
Rating

ارسم الرسم البياني لأي دالة وشاهد الرسوم البيانية لمشتقاتها و أجزائها التكاملية. لا تنس أن تقوم باستخدام ضوابط التكبير/التصغير على محور y لضبط مستوى الحجم.

نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Michael Dubson
Trish Loeblein
Date Added:
08/31/2009
أداة رسم حساب التفاضل والتكامل
Conditions of Use:
قراءة النص المطبوع بخط رفيع
Rating

ارسم الرسم البياني لأي دالة وشاهد الرسوم البيانية لمشتقاتها و أجزائها التكاملية. لا تنس أن تقوم باستخدام ضوابط التكبير/التصغير على محور y لضبط مستوى الحجم.

نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Michael Dubson
Patricia Loblein
Date Added:
02/02/2013
Catalytic Converter
Conditions of Use:
Remix and Share
Rating

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.

Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Prof. Mohammad El-Khateeb
Date Added:
06/11/2012
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
منحنى متطابق
Conditions of Use:
قراءة النص المطبوع بخط رفيع
Rating

باستخدام الماوس الخاص بك، اسحب نقاط البيانات والأشرطة الخطأ الخاصة بهم، وشاهد أفضل تطابق منحنى متعدد الحدود تم تحديثه على الفور. اختر النوع المطابق: الخطي , التربيعي , التكعيبي أو ذو الدرجة الرابعة. يعرض لك مربع تشي المصغر الثابت عندما يكون التطابق جيدا. أو يمكنك محاولة ايجاد أفضل تطابق عن طريق تعديل مًعلمات المطابقة يدويا.

نوع المادة:
محاكاة
Provider:
University of Colorado Boulder
Provider Set:
المحاكاة التفاعلية لموقع PhET
المؤلف:
Michael Dubson
Patricia Loblein
Date Added:
08/02/2012
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
Inquiry: Using an Egg Drop Activity to Promote Critical Thinking and Analysis Skills
Conditions of Use:
Remix and Share
Rating

In this hands-on inquiry activity, students will design and construct an apparatus that will permit an egg to survive a nine foot fall. Students are given limited materials, so they must critically think about the design and improvise strategies during the building of the apparatus

Material Type:
Activity/Lab
Assessment
Lesson Plan
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Pedagogy in Action
Author:
Seth Webster
Date Added:
12/09/2011
Is Bigger Better? A Look at a Selection Bias that Is All Around Us
Conditions of Use:
Remix and Share
Rating

This learning video addresses a particular problem of selection bias, a statistical bias in which there is an error in choosing the individuals or groups to make broader inferences. Rather than delve into this broad topic via formal statistics, we investigate how it may appear in our everyday lives, sometimes distorting our perceptions of people, places and events, unless we are careful. When people are picked at random from two groups of different sizes, most of those selected usually come from the bigger group. That means we will hear more about the experience of the bigger group than that of the smaller one. This isn't always a bad thing, but it isn't always a good thing either. Because big groups ''speak louder,'' we have to be careful when we write mathematical formulas about what happened in the two groups. We think about this issue in this video, with examples that involve theaters, buses, and lemons. The prerequisite for this video lesson is a familiarity with algebra. It will take about one hour to complete, and the only materials needed are a blackboard and chalk.

Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Anna Teytelman
Arnold Barnett
MIT BLOSSOMS
Date Added:
06/02/2012
Life Science for Middle School (Teacher's Edition)
Conditions of Use:
Remix and Share
Rating

CK-12 Life Science Honors For Middle School covers seven units: Understanding Living Things; Cells: The Building Blocks of Life; Genetics and Evolution; Prokaryotes, Protists, Fungi, and Plants; The Animal Kingdom; The Human Body; and Ecology.

Material Type:
Activity/Lab
Textbook
Provider:
CK-12 Foundation
Provider Set:
CK-12 FlexBook
Author:
Wilkin, Douglas (Editor)
Date Added:
04/21/2010
Understanding Science: How science really works
Rating

The mission of Understanding Science is to provide a fun, accessible, and free resource that accurately communicates what science is and how it really works. The process of science is exciting, but standard explanations often miss its dynamic nature. Science affects us all everyday, but people often feel cut off from science. Science is an intensely human endeavor, but many portrayals gloss over the passion, curiosity, and even rivalries and pitfalls that characterize all human ventures. Understanding Science gives users an inside look at the general principles, methods, and motivations that underlie all of science. This project has at its heart a re-engagement with science that begins with teacher preparation and ends with broader public understanding. Its immediate goals are to (1) improve teacher understanding of the nature of the scientific enterprise, (2) provide resources and strategies that encourage and enable K-16 teachers to reinforce the nature of science throughout their science teaching, and (3) provide a clear and informative reference for students and the general public that accurately portrays the scientific endeavor. The Understanding Science site was produced by the UC Museum of Paleontology of the University of California at Berkeley, in collaboration with a diverse group of scientists and teachers, and was funded by the National Science Foundation1. Understanding Science was informed and initially inspired by our work on the Understanding Evolution project, which highlighted the fact that many misconceptions regarding evolution spring from misunderstandings of the nature of science. Furthermore, research indicates that students and teachers at all grade levels have inadequate understandings of the nature and process of science, which may be traced to classrooms in which science is taught as a simple, linear, and non-generative process. This false and impoverished depiction disengages students, discourages public support, and may help explain current indications that the U.S. is losing its global edge in science. Even beyond the health of the U.S. economy, the public has a genuine need to critically assess conflicting representations of scientific evidence in the media. To do this, they need to understand the strengths, limitations, and basic methods of the enterprise that has produced those claims. Understanding Science takes an important step towards meeting these needs.

Material Type:
Activity/Lab
Diagram/Illustration
Homework/Assignment
Interactive
Lecture Notes
Lesson Plan
Reading
Teaching/Learning Strategy
Provider:
AMSER: Applied Math and Science Education Repository
Internet Scout Project
U.C. Berkeley
University Corporation for Atmospheric Research
Provider Set:
AMSER: Applied Math and Science Education Repository
Internet Scout Project
Individual Authors
DLESE Community Collection
Author:
Individual Authors
Date Added:
02/16/2011
pH Scale (AR)
Conditions of Use:
Read the Fine Print
Rating

Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!

Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Chris Malley
Jack Barbera
Kathy Perkins
Laurie Landgon
Patricia Loblein
Wendy Adams
Date Added:
07/02/2012