This page contains many links that I think are useful or interesting to my students and readers. Please use common sense and remain safe should you decide to explore further than just watching them for their content. I am aware that some links are no longer functioning. I will not remove a non-functioning link until a new replacement is found. If you find a replacement link for a non-functioning one or want me to add a new link for a new topic, please let me know by email ( Thanks, and enjoy.

1 - Get your textbook (plus many other HS textbooks) from your schoolnet account on-line. For the chemistry book try: {Textbook link is no longer valid} which I found from a google search of "Holt Chemistry 2004 on-line textbook .pdf" I am still looking for a .pdf of Holt Physical Science 2004 or 2006 editions used in my classes.

2 - Discovery Education Student Center - See classroom posting for Assignment Codes

3 - Here are links to many of the videos we use in class: World of Chemistry Videos and their worksheets: World of Chemistry WS.doc. You view these videos by clicking on the "VoD" (Video on Demand), box to the right of each title. The video will appear as a popup window. You may need to register as a student before viewing a video. Make sure you hand in the worksheet page that corresponds to the video you watched.

4 - Here is a good Chemistry review video:
This one is a series of videos designed to help high school students pass the Regents Exam: Here is a fun intro book titled: The Cartoon Guide to Chemistry

5 - Science Friday Chemistry Videos

6- Helpful instructional resources containing links to reference sites helpful to the study of Chemistry and other sciences plus a few other sites that might prove useful or interesting to students:

7- Two old chemistry books (and newer one): A college textbook from 1885: Appleton's 1885 Chemistry textbook (pre-Mendeleev) and the chemistry book from 1817 that featured the experiment of Humphrey Davy and inspired Michael Faraday: Jane Marcet's 1817 "Conversations on Chemistry" In 1975, Italian writer and holocaust survivor, Primo Levi, wrote what the British Royal Institute called the best science book ever written; it was called "The Periodic Table" and is linked here as a .pdf.

8- How a teenager created a nuclear nightmare: Harpers magazine on-line article: "The Radioactive Boy Scout" (also a book)" The extracted text from this article is here: Radioactive Boy Scout - Harpers.doc. Read more about David Hahn on wikipedia and this article about what he was doing as of 2013. Sad news: David died of unpublished causes in September 2016. Compare David's unsupervised work to that of another teenager, Taylor Wilson:

9- Lots of course related materials: Chemistry reference material at "" and Stan's Chemistry Links

10 - A Frayer diagram I like:

11- MIT Physics Course Lectures on Video: Walter Lewin Demos and Lectures Also MIT Chemistry lectures: See them all (Search MIT open course videos). Here is a Paul Hewitt video about why the sky is blue at day and red at sunset (Compare to the same part of the Walter Lewin video, "For the Love of Physics" starting at 27:50))

12- Dr. Robert Nemiroff''s (NASA/MTU) award-winning website: Astronomy Picture of the Day (APOD). A copycat website on a somewhat another scientific field of study: Earth Science Picture of the Day, EPOS or ESPOD.

13- Information on our school: GWHS' Home Page and school district:Philadelphia School District

14 - Lots of Chemistry support links:

15 - Lots of Chemistry Demo's on YouTube (Don't be stupid - Be Safe):

16 - For those of you thinking you need an expensive Chemistry tutor, consider buying some of the low cost lessons from Thinkwell. If you download them and provide a copy for class, I'll split the cost with you:

17 - Here is an interesting article titled Fusion Power along with a worksheet..

18 - Many students have trouble linking biblical creation to a scientist's view of the age of the universe. With the work of Pensius and Wilson in 1965, scientists and theologians finally agreed that there was a beginning. For a detailed discussion that reconciles biblical creation with the age of the universe story, listen to MIT PhD Dr. Gerald Schroeder's "Genesis and the Big Bang" at If this link is dead try a google search of "Genesis and the big bang" or check this website:

19 - Here is an excellent book you can read on-line. It is a series of biographies interwoven with all the great names and discoveries in Chemistry. The title says it all: "Crucibles: The Story of Chemistry, from Ancient Alchemy to Nuclear Fission" by Bernard Jaffee

20 - Here is a website provided by a reliable colleague that offers chemistry learning resources. Let me know by e-mail what you find interesting:

21- This a good periodic table site: a link from Sam Kean's "Disapperaing Spoon" website. Here are a bunch of others from the sciencespot website: Here is a .pdf of the full text from the book. and here is another (formatted better). Here is my favorite phone app of the periodic table. Also, here is an explanation of an alternative arrangement of the D and F blocks, perhaps more technically correct.

22- Here is a good explanation of a how a refrigerator from PBS's Nova website as part of their series on "Absolute Zero":

23: New York chemistry teacher, Mark Rosengarten has a youtube channel loaded with excellent reviews of basic and more advanced chemistry topics.
His entire library:
Just basic topics:
His more advanced topics:
Some cute songs:
This is his website that contains lots more useful stuff:

24: Here is a page dedicated to photographs and descriptions of early science demonstration equipment

25: You can learn most anything from

26: Here are a few of my favorite "Don't do this at home" YouTube video channels: The Household Hacker, The Crazy Russian Hacker, and The King of Random (Grant Thompson). I think these guys all know each other. Beware, some of the videos from the "Household Hacker" are jokes and you should be able to tell the difference (One shows how to power a TV with an AAA battery and another how to keep a light bulb lit by having it illuminate its own a solar panel power supply - Pure garbage!! - See item #31). Also, check out "Cody's Lab" (See see Item 134 below for more details) and the Slo Mo Guys (One of my favorite of theirs is "How a TV works in Slow Motion").

27: Here is the link for the Bill Nye "Greatest Discoveries in Chemistry" video I show in class:

28: Several great classic PSSC physics videos here including an oldie but goodie: Frames of Reference (1960): and
Here is an article discussing the films: Science Education Article

29: Want to fly in an airplane for free? Find your local Young Eagles sponsor. General information at:

30: Interested in college courses for free? Try exploring this website:
(See also item 11 above)

31: A perpetual motion machine??? What thermodynamic laws might these violate? How about this self-powered light bulb:

32: Here are a few videos that describe aluminum processing.
Refining ore by electrolysis:
Formulating and casting:

33: Concerned about where this world is going and what America's role might be? Then consider the books by Thomas Freidman covered in these three videos:
"The World is Flat"
"Hot, Flat and Crowded"
"That Used to be Us"

34: An excellent lecture by Dr. Neil deGrasse Tyson:
Buried in here is a nice segment about the periodic table, money, and worldwide science research (see how America compares - not so good lately, as he shows us on this segment from the video: ).

35: Turn your smartphone camera into a microscope!

36: "What If...." physics discussions. Very entertaining:

37: Here is an excellent lecture titled "Chemical Curiosities: Surprising Science and Dramatic Demonstrations" from the British Royal Institution: (Here is a worksheet for extra credit on this video). As a supplement to this, I suggest you explore the whole series of Royal Institute of Chemistry videos found here: . One of my favorites is the "Free Range Chemistry" lecture by demonstrator Dr. Peter Wothers Here is another presentation of that lecture (a better one?) broken down into titled sections:

38: Dogs teaching chemistry?? !!!: The Atom:
Chemical Bonds:

39: Here is a video from the Science Channel about the engineering and design involved in the building of the desert city of Dubai:

40: Here is a link for "Man in the White Suit"

41: See a lecture or two at the Princeton Plasma Physics Laboratory (PPPL) Science on Saturday program. Student's can get extra credit by attending the lectures and writing a summary journal entry about it and collecting a piece of literature from the PPPL (The speaker's summary sheet or a color copy of the PPPL Fusion Power Information bulletin). Information about the program can be found here: Make sure you heed the entrance requirements (Must be accompanied by and adult over 18 years of age who shows a government-issued ID...). Can't make it to the lab? Watch the lecture LIVE through this link..

42: A free online science learning community that I have yet to explore fully:

43: Here is a collection of online newsletters from the American Society of Materials - on the cutting edge of science titled "Advanced Materials and Processes (AM&P)". I titled them by one of the articles I found interesting. There are several in each newsletter for you to discover: "A History of Alloyed Steel" plus...
, "Fracture Bone Screws" plus..., "Diffusion of Ink" plus..., "Bugbots" plus..., "Ice Cream Chemistry" plus..., , "Evolution of the Bicycle" plus..., "'Bed of nails' trick plus..., "The Methane Mamba" plus..., "'Nail Balance'" trick plus..., "Shrimp Cell Plastic" plus..., "Put the tire IN the road" plus..., "A Stone Sofa" plus..., "Rocket Science 101" plus..., "Worlds Largest Wind Tunnel" plus...., "Strain Indicating Paint" plus..., "Robotic Fish" plus.., "Hops waste cures gum disease??" plus.., "Artificial Snow" plus.., "Frozen Smoke" plus..., "Wrought Iron - History of Steel" plus..., "'Flower Image' winner" plus..., "The Bullet Proof Suit" plus..., "Iron History, 1645-1850" plus..., "Upsalite" plus..., "Rudolph's Nose" plus..., "World's Largest Snowball?" plus... ,"Press-hardened steel for light weigh pickup trucks" plus...,

44: Got and invention and need help with its launch. Try consulting with

45: Here is a good Chemistry review website:

46: My students have recommended this video on Thermodynamics from Bozeman Science: and

47: My A+ grade, "compare and contrast" English composition paper titled "Driving" . Enjoy.

48: Somebody reinvented the wheel!

49: A collection of space station videos are posted here:
The construction, module by module in a 2-minute video: from
A 25-minute tour:
A 55-minute tour:
A wet washcloth in space:
Physiological changes in space, 13 minutes:
Water purification in space, 2 minutes:
Videos from space collection:

50: Here are links to many of the History Channel's "How the Earth was Made" seriesKrakatoa, Iceland, The Alps, Hawaii, ... (search for more). Here's a great video from the Naked Science series: Birth of the Earth,

51: An excellent film that teaches the contributions of Louis Pasteur:

52: NASA plans to grab and reroute a killer asteroid! See:

53: The Original Cosmos series by Carl Sagan:

54: An excellent history of titanium: Ti-Metal-History

55: Want to learn a little more about Expanded Polystyrene foam (EPS). Click here.

56: Michael Faraday's "The Chemical History of the Candle" text, video reading with photos and a video lecture from the Royal Institute by Ian Russell.

57: Can we remove CO2 from the air and make hydrocarbon products? This company seems to be doing just that: See also: and

58: "The Twin Paradox" also known as relativistic time dilation. See
by Paul Hewitt. Also: A whole bunch of Paul Hewitt videos from the Hewittdrewit series.

59: The "New Periodic Table Song - In Order" and of course the old one by Tom Lehrer.

60: A 45 minute video about Aircraft Carrier Development titled, "Largest Aircraft Carriers in The World" from the "Big, Bigger, Biggest" Series, Another from the series on bridges:, Here is a video about Cassion's disease, now known as the bends, one of the consequences from unsafe SCUBA diving, but formerly known as "The Brooklyn Bridge Disease" Here is a more technical one: Here is a documentary about large scale commercial fishing:

61: An excellent video titled "Hunting the Elements" from the PBS NOVA series. The name says it all. Here is a link for the video.

62: How stuff works: Aircraft Prop Engine, Sewing Machine, and a Zipper. A Classic video on how a differential gearbox works. Here is a more modern limited slip differential.

63: Check out some of the videos from the "Slo Mo Guys" at

64: The Higgs-Boson explained:

65: Solar Impulse: Flying around the world without a drop of fuel!

66: Eureka! videos, twenty-two of them about 4 minutes to 4 minutes each, covering concepts in physics: From motion to energy.

67: A report from the NCEES about engineering licensing

68: The home page of the Chemical Heritage Museum in Philadelphia. Free admission and located in Society Hill within walking distance of the Independence Hall, Penn's Landing, and South Street.

69: Walt Disney's Multi-plane camera explained.

70: The construction of the Boeing 747-8 Aircraft and a turbine engine used on the 787 Dreamliner.

71: Here are a few videos that explain how engines work: The turbine Engine:,,, Here is a see-through head on a single cylinder Briggs and Stratton engine: , A see-through model rocket engine fired in slow motion:

72: A four bedroom $170,00 RV built by a naval engineer from a Garbage Truck:

73: Matchbox rockets by Grant Thompson, "The King of Random": (see also item #26).

74: The Duke Axial Engine:

75: How to make a foundry:

76: Two interesting 4-minute videos exploring the concept of a Trophic Cascade: How Wolves Change Rivers and How Whales Change Climate Those who want to explore the "How Wolves Change Rivers" trophic cascade concept should watch "Strange Days on Planet Earth - Part 3" from 20:30 to 31:25.

77: A few favorite videos: II take Exams and Its all about the Base

78: A most interesting machine to replace railroad ties from a Facebook page, "Trust Me, I'm a Mechanical Engineer"

79: Massive Chinese Bridge Builder:

80: Bill Nye's Greatest Inventions in Engineering and Architecture and Bill Nye's Greatest Inventions in Energy: the latter video has a 8-minute long section on Nuclear Power starting at 25:18 that is helpful for the study of atomic structure.

81: A few BBC videos hosted by Professor Dr. Jim Al-Khalili on the history of chemistry: Discovering the Elements, The Hidden Order, and The Power of the Elements. A few more about atomic discoveries: BBC Atom 1 - The Clash of Titans (Part 1), BBC Atom 2 - The Key to the Cosmos (Part 2), and BBC Atom 3 - The Illusion of Reality (Part 3).

82: The largest Submarine int eh US Navy, a 28-minute video:

83: A video about logging redwoods:
The use of a powder wedge:
A backyard experimenter splitting logs with flash powder:
An amazing tree harvesting machine:

84: Space Shuttle Challenger Accident Investigation Report (29 minutes):

85: A video about the Donner Party, detailing the infamous ordeal faced by a group of westward settlers attempting to cross the Rock Mountains in 1846: This one is one of the best video accounts, featured and discussed on (DVD for purchase). A youtube copy appears here:

86: A video by Bill Nye explaining the Stirling Engine:

87: Info on fire safety with painting oils. A report on spontaneous combustion of oil-soaked rags:

88: From the UK, "Science Fun" featuring visual illusions and neurological science.

89: Explore the Phet simulations to improve your math and science skills.

90: The PAL-V flying car. Like a helicopter & motorcycle or gyrocopter:

91: Encryption basics: A little bit about Alice, Bob, and Eve on cryptography or encryption:

92: A discussion of Seaborg's The island of Stability and a bit more on the subject:

93: Explosive Glass! or "Prince Rupert's Drops".Here's an article for download: Prince Rupert's Drops.doc and another by hyperlink: A few videos, two the Corning Museum of Glass: (Basic explanation, 1:06) (High Speed photographgy, 2:22) (Best video with explanation and high-speed photography 6:39)

94" The self-driving Bike!

95: Royal Society Trailblazing site: See some old science from the Renaissance to the current age.

96: An article about Bulk Solid Flow, an field I worked in while processing plastics and ceramics as a chemical engineer: This article can be used a s basis for extra credit.

97: Building bicycles based on memory drawings:

98: A seven-minute titled Six Chemical Reaction that Changed History. Thank you, Mr. Heinerici

99: I had a Gilbert Chemistry Kit when I was a child. I kind of wish I had this one too:

100: What are we doing to our earth? Here are a few video's by Yann Arthus-Bertand and Michael Pipiot to give you a perspective: HOME (2009) and Planet Ocean (2014).

101: A few videos about inventor Dr. Temple Grandin, an autistic woman who has changed the world of farming animals by introducing humane conditions that have become the industrial standards for meat production. BBC once did a video about her called "The Woman Who Thinks Like a Cow". Here are a few other videos from the "Glass Walls Project" on proper meat production: Beef , Lamb, Pork, and Turkey. Here is her TED talk from 2010.

102: ESRI Story Maps Gallery:

103: Observe swarm behavior of starlings (called a murmuration) at and
This behavior occurs with fish and bees. See:

104: A video about the alkali metal reactions with water:

105: Oh, to cheat on an exam in college; just hope your professor is not this guy: and Here is a 1 minutes talk about why not to cheat on your schoolwork (the 1 minute starts at 1:25 into the video): and finally, why you should not steal your teacher's computer:

106: A half coated fluorescent tube showing the plasma without the phosphor:

107: When you study mechanical engineering, you will study dynamics. Here is what you will come to understand and design to prevent:

108: Go visit the Mutter Museum in Philadelphia at the College of Physicians. Learn about medicine up to the turn of the last century; before the four "A"'s (Antiseptics, Antibiotics, Anesthesia, and Analgesics).
Here is their website:
Here is a 44-minute video about items in the museum:

109: The Seven Minutes of Terror - Landing the rovers on Mars:
The unsuccessful landing of the balloon cushioned rovers:

110: Floating wind turbines contribute to Scotland's 33% wind power energy supply.

111: Climate Central: Website for studying Weather and Climate:

112: A video introducing property trends on the Periodic Tables, Ferocious Elements.

113: Chemical Management Resources:

114: Monty Python's "The Galaxy Song" with lyrics form the film, "The Meaning of Life"

115: Some more Astronomy stuff: Retrograde Motion (APOD),Retrograde motion simple video, Retrograde motion explained in a video, Information about the Milky Way - Andromeda collision: , A great image of Polaris that flat-earther' might struggle with, A Star Size Comparison, A Star Size Comparison Revised (Part 2). The famous photo "There they are" includes all of humanity except the photographer. How Uranus got its name. Why Pluto is not a Planet.

116: What's in a banana (Its scary)?

117: How does a phonograph record work: and

118: Writing formulas with polyatomic ions:

119: A few videos on drawing Lewis Structures (Electron Dot Diagrams): and

120: A few videos about nuclear weapon proliferation during the cold war: A time line of nuclear bomb testing. The Rise and Fall of the American Fallout Shelter. The "Duck and Cover" video featuring "Bert The Turtle"

121: Daylight Savings Time explained:

122: Two videos about the scale of the universe, "Powers of 10" a 1977 video based on Kees Boeke's (1884-1966) paper "Cosmic View" published in 1957 and "Scale of the Universe" by contemporary rapper David Brown.

123: A local geologic wonder: Ringing Rock Park in Bucks County, PA.

124: Neil Armstrong crashes the lunar lander simulator.

125: A video by National Geographic from the Stange Days on Planet Earth Series - "The Invaders", Also A 21 minute video by Aquakids about the Snakehead fish, an invasive species in North America.

126: A 7:30 min video titled "A Journey through the Atmosphere". From the "Earth The Biography" series

127: A short on Envista farms - Urban fish and produce farming Aquaponics and Hydroponics.

128: The HELA cells, as described in the BBC film, "The Way of All Flesh" and the book/video, "The Immortal Life of Henrietta Lacks" and while we are on the subject of immortality, check out the work of 1912 Nobel prize laureate, Alexis Carrel who developed a technique for stitching blood vessels and kept a chicken heart beating for twenty years!

129: Automobile crash text videos: We also watched a few related videos: Comparison crash test (1959 vs. 2009 Chevy), Smart car crash test, and . Another crash test video of modern muscle cars containing lots of details.

130: The wide-angle, distortion-free, "Hick's mirror"; fascinating. A short video, , "the non-reversing mirror" all resulting from the work of Drexel Univerisity's Professor Andrew Hicks.

131: Green energy at Lincoln Financial Field - Home of the Eagles! Energy and pawer equipment in PA.

132: The National Energy Education Development project,

133: Some videos on historical, evolutionary biodiversity developments: The PBS Video Series based on the book by paleontologist Neil Shubin, "Your Inner Fish": Episode 1 - Your Inner Fish, Episode 2 - Your Inner Reptile, and Episode 3 - Your Inner Monkey and the Nova program, Dogs decoded tells the story of how the dog evolved from the wolf ( 31:19 to 36:16 describes the Home Raised Wolf with Dogs Experiment, and 36:20 to 44:35 describes the Siberian Fox Experiment). Here is a 46 minute National Geographic video that describes how fossil records indicate how wolf-like creatures who hunted in shallow waters might have evolved into whales and dolphins: "Morphed: When Whales had legs" Why dogs have floppy ears (3:35).

134: Cody's Lab; (and backup site: The CodyReeder ) a nice collection of science related videos including a few favorites: Displacing and distilling Cesium, Catalysis primer and mining platinum from highway road debris. Modeling a gas with magnets. I wonder how long this guy will live without serious injury or worse! (e.g. His "Biting Sodium Metal" video - You know he became famous for drinking Cyanide poison on video at 1/20th the lethal dose then describing the effects).

135: A simple photosynthesis video. Perhaps a better one (12 minutes from Bozeman Science).

136: A 90-minute video titled "Life without people" about how the world will recover from the lack of human activity. This pilot show was based on a book and later made into a television series titled, "Life after Humans"

137: Measuring the speed of light: Using eclipses of io (1600's) using a rotating disc (Fizeau's experiment) (part of a longer 8 minute TED talk video by Adam Savage on scientific discovery).

138: The blue book of ASTM test method format:

139: A website dedicated to Water Quakery - Debunking claims made be expensive "Health" water suppliers.

140: A bit on video film restoration of the Beatles Videos:

141: A video predicting life on earth in 2030, 2040, and 2050.

142: CryptographyResourses: and William Stallings textbook on "Cryptography and Network Security" (4th edition).Here is the solutions manual to that textbook.

143: Crash course you tube video series on ecology:

142: One of the first great engineering projects in the United States, the building of the Erie Canal - Opposed by president Thomas Jefferson, it was completed in just eight years and dug entirely by hand. Here is a short 7-minute video about it:

143: Lots of data related to world population trends including literacy and fertility: