Top Fifty

Periodic Table first discovered in 1869 by Dmitry I. Mendeleyev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right accross the table. The horizontal rows a called periods and the vertical rows, groups.... This portal presents the periodic table in an innovative way.Hits: 1057

Portal of CBSE India board students offers CBSE India guess papers, CBSE sample papers, CBSE board 10 years question bank, CBSE tutors Service in India and outside india ,CBSE Books of Indian publisher ,Central Board of Secondary Education Affiliated schools in India, CBSE Results, CBSE Syllabus, CBSE examination papers and CBSE exams techniques, Indian schools directory, educational articles. CBSE NEWS, CBSE Study materials, ebooks Indian college education, university. CBSE Guess is useful for students, teachers, principals, schools, parents, book publishers and private educational institutes, coaching institutes and freelance teachers.Hits: 1044

Trigonometric identities, functions, inverse functions, special angles, any angles,arcfunctions, proofs....Real help for High school students.Hits: 859

Breathtaking images of Galaxies and nebulae. Truely out of this world! Learn the secrets of deep space. Learn how stars and galaxies, quasars, pulsars and black holes are born. For students of astronomy, astrophusics, space exploration through the eyes of Hubble Space Telescope.Hits: 822

A production of the University of Texas Mc Donald Observatory, this website is titled "Your guide to the universe". For star gazers, it comes with Beginners Guide, Constellation Guide, Weekly Tips, Image Gallery, Astro Glossary, podcasts and Teaching resources among other things.Hits: 811

Beautiful Birds traces the development of ornithological illustration in the 18th and 19th centuries and highlights the changing techniques from metal and wood engraving to chromolithography during that period. The exhibition includes books from Cornell Library's Hill Ornithology Collection and art works on loan from the personal collection of benefactors Kenneth E. and Dorothy V. Hill.Hits: 383

Learn all things under the sun about Geography at this virtual Geography Department.Hits: 371

A treasure trove of mathematical research papers. Ideally suited for PGs and above but Graduate level Students can have a feel of of advance mathematics and learn a few tricks.Hits: 361

The U.S. Geological Survey provides scientific information intended to help educate the public about natural resources, natural hazards, geospatial data, and issues that affect our quality of life.Hits: 340

The United Kingdom Mathematics Trust was founded in 1996 as a registered charity to advance the education of children and young people in mathematics. The UKMT organises national mathematics competitions and other mathematical enrichment activities for 1118 year old UK school pupils . These range from popular "mass" Maths Challenges to team competitions, forums for teachers and the selection and training of the UK team for the International Mathematical Olympiad (IMO).Hits: 340

Topology is a branch of mathematics that considers mathematical objects without concerning itself with measurement. Length, width, height, distance become irrelevant. Instead, other features of figures that remain the same (invariants) when figures are distorted are studiedHits: 337

Maintained by UNL College of Engineering, covers Algebra, Geometry, Trigonometry, Analytical Geometry, Calculus and VectorsHits: 332

Interactive Real Analysis is an interactive website for Real Analysis or Advanced Calculus . It deals with sets, sequences, series, continuity, differentiability, integrability (Riemann and Lebesgue), topology, and more.Hits: 332

FRACTALS are incredibly complex geometric objects that are defined by very simple rules. The one characteristic they all share is that they have selfsimilarity meaning that if one looks closer and closer into the fractal, one will see smaller and smaller copies of the original, large image imbedded withinHits: 329

Modified lecture outlines Michael J. Farabee, Ph.D had developed over many years of teaching collegelevel introductory biology. A treasure trove of Biology books online.Hits: 325

The Manduca Project run by the University of Arizona is based in student explorations of Manduca sexta and has proven that this insect is important not only as a research subject, but also as a strong bridge between scientists and studentsHits: 297

This is a site maintained by the Spanish Ministry of Education in Spanish and English. Some features are available only in Spanish. This wonderful site helps children visualize Mathematical concepts, from Secondary level onwards, through appealing 2D and 3D java animations. Java need to be enabled.Hits: 296

A very interesting site for High School kids. Links are not backlinked, so open them in new windows.Hits: 287

This site includes tutorials on Organic Chemistry, mechanisms of Organic Chemistry, practice tests and laboratory help. Learn all about Comparing acidities of organic molecules by structure, Drawing alkane isomers given a molecular formula, Determining degrees of unsaturation from a structure or formula, Calculating formal charges on atoms, Naming bicyclic alkanes, Naming alkanes, Assigning R & S stereochemistry to chiral centers, Seeing electronegativity effects, Free Radical Halogenation, SN2 Reaction: Bimolecular Subsitution, SN1 Reaction: Unimolecular Substitution, E1: First Order Elimination, E2: Second Order Elimination, Electrophilic Addition to Alkenes, Hydroboration of Alkenes, Nucleophilic Addition to Carbonyl Groups, Alcohol Dehydration, Fischer Esterification, Williamson Ether Synthesis, FriedelCrafts Alkylation, Claisen Condensation, BaeyerVillager Oxidation and DielsAlder Reaction.Hits: 277

The field of Number Theory, as with many fields in mathematics, began as an abstract exercise and eventually found countless applications in the modern world. This page has links to a variety of sites that explore both sides of Number Theory.Hits: 277

Maths online provides multimedia learning resources in mathematics for students of secondary school to university levels. There are many useful tools, applets and links useful for students of maths.Hits: 269

Listen to the wonders of the universe unravelled through Podcasts from HubblesiteHits: 258

This site contains information on the most important Name Reactions and keywords for the field of organic synthesis, a graphical index of bond types providing links to search for specific transformations of interest and locate examples to use in solving synthetic problems, and Protecting Groups list containing stability data for the most important groups.Hits: 257

EarthTrends is a comprehensive online database, maintained by the World Resources Institute, that focuses on the environmental, social, and economic trends that shape our world.Hits: 256

The faculty and students of Princeton\'s Physics Department engage in theoretical and experimental research that spans most of the central topics of modern physics. Find out about these activitiesHits: 253

This site provides thermochemical, thermophysical, and ion energetics data compiled by The National Institute of Standards and Technology (NIST) under the Standard Reference Data Program. Find data on chemical species by Formula Search, Chemical Name Search, CAS Registry Number Search, Ionization Energy Search, Electron Affinity Search, Proton Affinity Search, Acidity Search, Appearance Energy Product Search, Vibrational Energy Search, Electronic Energy Level Search, Applet Based Structure Search, File Based Structure Search, Structure Class Search, Molecular Weight Search, Reaction Search, Author Search and other indirect searches.Hits: 250

Maths Games for kids Plenty of edutainment! Learn maths through funfilled activities. Welldesigned games with easy interface.Hits: 249

Learn basic physics concepts and review them in the <strong>Physics Tutorial</strong>. <strong>Quizzes</strong> let you know you got it.Is physics difficult for you to visualize? Visit the <strong>Multimedia Physics Studio</strong>.Practice your skills in <strong>Physics Help</strong>.Hits: 247

Chemtutor gives simple lucid tutorials on High School Chemistry. You will find The math you need for chemistry, Units and dimensions of measurements, The inner workings of atoms, A description of some selected common elements, An organized look at elements, The states of matter and energy considerations, Naming compounds and writing chemical formulas of small compounds, Writing simple chemical equations and types of reaction. Mols, stoichiometry, and percentages. Redox reactions and electrochemistry, Gases and the gas laws. Solutions and suspensions. Acids and bases etc...Hits: 245

HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation. For the most part, it is laid out in small segments or "cards", true to its original development in HyperCard. The entire environment is interconnected with thousands of links, reminiscent of a neural networkHits: 244

Interactive learning resources in algebra, trigonometry, graphs, calculus, complex numbers, statistics etc... Uses Flash, LiveMath and Scientific Notebook. You need to have the plugins installed and enabled. Quite useful for students of high school to undergraduate students.Hits: 243

A community website from IOP PublishingHits: 242

Read about R&D work done by NIST in Electron & Optical Physics, Atomic Physics, Optical Technology, Ionizing Radiation, Time & Frequency and Quantum PhysicsHits: 237

Hey Kids! There's all kinds of fun stuff to do here for preschoolers on up. We have games, coloring pages, stories, and lots of information about living things (which is what biology is all about). Have fun and don't forget to check out the Learning Room too!Hits: 235

Astronomy is a monthly science and hobby magazine with more than 140,000 readers. The magazine serves readers who want to keep up with the latest discoveries and understand astronomical science, as well as those who want to know what is happening in the sky each month.Hits: 230

Small Stella and Great Stella are computer programs which let you create and view polyhedra on the screen, then print out the nets required to build your own models out of paper. Small Stella has a fixed list of builtin models and can print out nets for over 300 polyhedra. Great Stella is a more advanced program, with many more builtin models, and tools for building literally trillions of new ones. Click here for lots of photos of polyhedra I've made, all using nets printed from these programs, along with tips for building them.Hits: 212

A site from Los Alamos National Laboratory. Handson lessons and resources in Knot and Set Theories, Coloring problem, Algorithms and Finite State Machines.Hits: 212

This site presents "modern, highquality online textbook on advanced electrodynamics, entitled Electromagnetic Field Theory, free for anybody to download and to contribute to." "Written with the advanced undergraduate or graduate student in mind, Electromagnetic Field Theory is a textbook on the theory of electrodynamics, at roughly the same level as the wellknown textbooks by Jackson and Panofsky&Phillips. The book is written mainly from a classical field theoretical point of view, emphasising fundamental and subtle properties of the EM field and includes a comprehensive appendix on the mathematical methods used. It treats relativistic covariance and the Lagrangian/Hamiltionan formulation of electromagnetic field theory, with an eye on modern ideas of symmetries, duality and unification of theories, and includes a rigorous, comprehensive and detailed treatment of EM radiation phenomena and some elements of semiclassical quantum electrodynamics. ...."Hits: 198

Take a look at the specific mathematics used by the GPS receivers on the ground to calculate location on earth, using the two signals (location and timing) emanating from the satellites. The mathematics necessary to understand the system as a whole includes solving systems of equations, equations of circles, equations of spheres, projections, solving (algebracially) a system of 4 spheres, inverse trigonometric functions, the distance formula, the Pythagorean Theorem, the d=rt formula, use of matrices, etc..Hits: 194

The Howard Hughes Medical Institute invites curious kids to explore biology...on screen, off screen, and in between.Hits: 189

Common Compound Library, Companion Notes, Construction Kits, Articles, Tutorials........... A very useful site for Students of Highschool and aboveHits: 180

This is a compilation of Frequently Asked Questions (and their answers) about Mathematics. Topics range from trivia and the trivial to advanced subjects such as Wiles recent proof of Fermat's Last TheoremHits: 179

Discoveries and Breakthroughs Inside Science provides video newscasts. Accurate, scientifically reviewed and reliable, DBIS brings the latest science, engineering, math and technology news to a general audience with quality science reporting.Hits: 176

About.com Chemistry JournalHits: 175

This resource has been assembled over more than a decade by internet encyclopedist Eric W Weisstein with assistance from the internet community.Hits: 175

Physics and Astronomy OnlineA great site for discerning students of Physics/ Astronomy and enthusiastsHits: 174

Benjamin Crowell's website offering downloadable books under creative common licence. The folowing books are available for free download. 1. Newtonian Physics 2. Conservation Laws 3. Vibrations and Waves 4. Electricity and Magnetism 5. Optics 6. The Modern Revolution in Physics These books are adopted as text books in many American educational institutions.Hits: 168

Is math class too easy for you? Looking for a greater challenge? You've come to the right place.Hits: 166

Colorful flash games for kids to understand and reinforce arithmetic operations.Hits: 163

The Biology Project is an interactive online resource for learning biology developed at The University of Arizona. The Biology Project is fun, richly illustrated, and tested on 1000s of students. It has been designed for biology students at the college level, but is useful for high school students, medical students, physicians, science writers, and all types of interested people. Teachers can assign problems sets for reviews before exams, or may want to assign an activity before students cover that topic in their laboratory. Students will find that the information covered in The Biology Project is probably just what they've been studying in their introductory biology course, and advanced students will find these materials to be a useful review. All students will benefit from the reallife applications of biology and the inclusion of uptodate research findings.Hits: 160
Rate this page: