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The contents of these pages are neither the responsibility of El Diamante High School nor Visalia Unified School District. None-the-less, I believe that the contents are appropriate for secondary instruction, as are any resources linked from within this site. Feel free to look around. Some of the resources may be very specific to the courses that I teach, while others may be of general use to many high school science students and instructors. Students and teachers may print, or download and use any materials that you find helpful. ***I DO NOT answer homework questions from students other than those I have in class - Sorry!

No Surprise - Chrome is the Top Browser on

When I started this site many years ago, Netscape was the #1 browser. It was surpassed a few years later by Internet Explorer, which has now been passed up by Chrome. It is hard to tell how much of that is coming from phones and tablets, but I do know that the top IP address in October came from those iPads at Paraclete High School. I really have to stop by that school for a visit the next time that I am in that part of the state. So, Spririts of Paraclete, thanks for stopping by, and I hope those new iPads are working well for you.

Remember to check out some of the new features on this website. I updated the Biology PowerPoints, Chemistry PowerPoints, and AP Chemistry PowerPoints to include an HTML5 option and some nice new features. For those of you with iPads, the HTML 5 presentations provide the opportunity to download iSpring's FREE iPad app, which allows you to save the HTML5 PowerPoint presentation to your iPad for offline use.

Dioxin in jsMol I also made substantial improvements to my Molecule Library, bringing it into the 21st century with jsMOl, the successor to JMol. The 3d-molecules are presented in HTML 5, with the option of using the original JMol applet if you so choose. I also updated the menu system and provided access to some off-site databases as well.


The Chemistry Page will give first year chemistry students access to all of the notes, worksheets, labs, Powerpoints and other important documents for my General Chemistry classes. You may also access your current grades, a current Course Calendar, as well as links to free chemistry software. Interactive review activities for important concepts, organized by units, are provided to help the student prepare for important benchmarks and tests.

AP Chemistry

I am teaching a section of AP Chemistry in the 2013 - 2014 school year. The AP Chemistry Page hosts the resources for the class, which include PowerPoints in HTML 5 and Flash format, notes, review activities, and a calendar. I am committing a lot of time and energy toward converting these resources to align with the College Board's new AP Chemistry Framework. Though I developed the resources for my AP students, they will probably also prove useful to college students taking a first year chemistry course.


I am not teaching Biology during the 2013 - 2014 school year. I will continue to provide access to my course materials, including Powerpoints (web-based and offline formats) and interactive review activities to help the student prepare for important benchmarks and tests. I may even find the time to add a few new things, so check back often.

This site is best viewed with the latest versions of browsers such as Firefox, Internet Explorer, Google Chrome, and Safari. In addition, many of the files at this site require the free Adobe Acrobat Reader plug-in.

Privacy Policy : I use GoogleAds to serve ads when you visit my website. Google may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by Google, click here..

Some background on your host, Mr. Allan, can be found HERE. I do appreciate hearing from users of this site. Let me know if you find mistakes, or if there are features that you think I might add. You may most easily contact me at I will do my best to respond to you, but please understand that commitments to my family and my job come first. If you are one of my students, or the parent of one of my students, you can expect a response within 24 hours.