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Richard Nakka's Experimental Rocketry Web Site shares experiences, ideas and technical details of amateur experimental rocketry, where rockets and their motors are built from scratch. It includes the author's notes, flight logs and photographs, plus work by others. The site was originally posted in July 1997 and a 2026 downloadable version is offered for purchase.
BioNinja is a website built to cover the IBDP Biology curriculum, with information on syllabus components organised by topics or themes. It also offers experimental skills summaries, Powerpoints, summary notes, data analysis tasks and quizzes. The site notes it is a free resource set up by a single teacher and a work in progress.
Khan Academy provides educational lessons, courses, tutorials, or study material for self-learning.
Number Academy provides educational lessons, courses, tutorials, or study material for self-learning.
Wolfram MathWorld is a comprehensive encyclopedia of mathematics with 13,000 detailed entries. It is continually updated, extensively illustrated, and includes interactive examples, covering areas such as algebra, geometry, calculus and analysis, and probability and statistics.
ARKAT USA, Inc. publishes ARKIVOC, described as a free journal of organic chemistry. The site lists recent and accepted manuscripts with DOIs and PDF full texts, and offers browse, search and conference sections.
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Richard Nakka's Experimental Rocketry Web Site shares experiences, ideas and technical details of amateur experimental rocketry, where rockets and their motors are built from scratch. It includes the author's notes, flight logs and photographs, plus work by others. The site was originally posted in July 1997 and a 2026 downloadable version is offered for purchase.
BioNinja is a website built to cover the IBDP Biology curriculum, with information on syllabus components organised by topics or themes. It also offers experimental skills summaries, Powerpoints, summary notes, data analysis tasks and quizzes. The site notes it is a free resource set up by a single teacher and a work in progress.
Khan Academy provides educational lessons, courses, tutorials, or study material for self-learning.
Number Academy provides educational lessons, courses, tutorials, or study material for self-learning.
Wolfram MathWorld is a comprehensive encyclopedia of mathematics with 13,000 detailed entries. It is continually updated, extensively illustrated, and includes interactive examples, covering areas such as algebra, geometry, calculus and analysis, and probability and statistics.
ARKAT USA, Inc. publishes ARKIVOC, described as a free journal of organic chemistry. The site lists recent and accepted manuscripts with DOIs and PDF full texts, and offers browse, search and conference sections.
