Five page revision notes on Gibbs free energy, for the OCR A specification. Covers the standard trick questions, graphs against temperature, and includes a range of worked examples, diagrams of the graphs, types of reactions where ΔH and ΔS have different signs and unit conversion examples.

It’s a real difficulty for students that the AQA A-level biology textbook doesn’t include a diagram of an ELISA. So here’s notes on one page covering the ELISA stages, with a diagram of the specific type of ELISA on the AQA course (an indirect ELISA), and explaining how it links to other things students may know about like pregnancy tests and COVID lateral flow tests. There’s an explanation of what monoclonal antibodies are, explanation of artificial passive immunity as an extension, and links to some good videos. 9/3/2024 update: new version! Clearer numbering of the stages to link diagram to text, shortened URLs, brighter colours and better paragraphing. Also added a version tuned to print better in black and white.

Notes on one page each covering all the tests for anions and cations for Edexcel GCSE chemistry, including the precipitation equations. Versions both in colour and in black and white for photocopying. With the positive ion tests, I’ve included model equations, both complete and ionic, for the precipitation reactions, with examples for a +2 and +3 ion. With the negative ion tests, there’s both a full and ionic equation for carbonate, sulfate and halide ion reactions to give students good models. To show the differences in formulas between compounds of metals that form +2 and +1 ions, there’s equations for both sodium and calcium carbonate too, and details of what happens if you use different acids.

Two-page revision checklist of all the transition metal colours on the OCR A A-level chemistry specification. Also includes list of notable catalysts, half-equations with dichromate(VI) and manganate(VII) ions, lists of the types of stereoisomerism, and links to videos of most of the reactions. There’s versions both in colour and black and white. These notes are inspired by vocab lists you use when you learn a foreign language-you cover the answers and read through. Getting the points to learn into an order you repeat over and over is really helpful for learning everything. Changelog, 12/3/23: a broken link has been fixed.

Combined lesson plan: a presentation on metallic bonding, simple fill-in-the-blank questions questions and a harder sheet of written questions linked to the presentation, and a take-home set of notes on one page. Covers metallic bonding, conduction of electricity and heat, the fact that metals are malleable/ductile and alloys. Starts with a mixer exercise covering uses of metals and also includes some properties and uses of the most common metals. Need to use this lesson plan in a hurry and want to deliver a polished lesson? I’ve got you covered: each slide ends with a full stop marking that it’s the last point on the slide so you know when the slide’s going to change. Also, each exam question slide has a spare line before the answer is revealed so you don’t accidentally show the answer too early. Included is a fairly easy fill-in-the-blanks worksheet and an exam-style written questions worksheet matching questions on the presentation, and the mark schemes for both. Both worksheets have pictures and diagrams to stimulate students. The notes have diagrams and also links to two recommended YouTube videos for revision. The pack is suitable for all specifications for GCSE and is useful for recap for students coming into A-level. It’s particularly been written for the AQA trilogy and synergy chemistry GCSEs and hits specific phrasing from their mark schemes. Doing Edexcel iGCSE? I now have a specific version for that course covering things like the types of steel. Besides covering metallic bonding, the presentation introduces themes for future lessons, like that metal recycling saves energy and rust prevention.

Worksheet for AQA A-level biology plant tropism on two pages, covering IAA, phototropism, gravitotropism, the acid growth hypothesis and an experiment design question. Versions for colour and black and white printing and a detailed mark scheme. Written for the new 2015 specification. Doing a different specification? I have versions for AQA GCSE current specification, Edexcel GCSE and Cambridge iGCSE in a similar style. 2024 update: edited to give students more space for writing answers.

Some of the hardest questions for many GCSE chemistry students are the long answer written questions, explaining things like why the rate of reaction increases when you increase the temperature, and how the position of equilibrium shifts. So I’ve written a one-page set of notes for the Edexcel iGCSE chemistry course that covers all these questions, fitting them onto a single page. These notes cover: how temperature and concentration affect rate of reaction melting point of ionic, molecular and giant covalent chemicals equilibrium position conductivity It makes chemistry so much easier for students having everything on a single page. Particularly intended for iGCSE chemistry but I think it’s also pretty helpful for A-level students just starting the course who need to recap what they did last year, many will have forgotten these topics. This set of notes was written consulting current Edexcel iGCSE chemistry papers and mark schemes. Questions consulted included: rate: 1CR June 2019, question 5d bonding: 1CR June 2019 9a and 9b equilibrium: June 2019, 2C 7b and 2CR 7b conductivity: 2CR June 2019 and Paper 1CR June 2019 9c diffusion: 1C Jan 2018, 3c ii) Versions with colour pictures and without pictures for photocopying. I also have a version for the AQA GCSEs and a combined set for a range of courses.

One-page poster of the transition metal formulas and colours of aqua ions and reactions with hydroxide ions, ammonia, carbonate ions and HCl. Covers Fe2+, Fe3+, Al3+, Cu2+ and Co2+ ions. Versions in full colour and black and white. For AQA A-level chemistry. These notes are inspired by vocab check lists you use when you learn a foreign language-you cover the answers and read through. Getting the points to learn into an order you repeat over and over is really helpful for learning everything. UPDATE, October 2023: based on feedback from students, more details on the cobalt complexes and the problem of what you are and aren’t asked to know, the half-equation for oxidation by dissolved oxygen in alkaline solution has been added, the equation of ammonia acting as an alkali in water, and an explanation that on non-course materials you may see the hydroxide formulas without showing that they’re hydrated.

Worksheets for teaching polymers on the AQA chemistry specification, covering the current 9-1 GCSEs: a two-page question and answer worksheet covering addition and condensation polymers, and a fill-in-the-blanks sheet for the common addition polymers and their uses. Practices definitions and drawing organic molecule structures. Mark schemes are attached. I include a lot of alternative ways the molecules could be drawn in case the person giving the lesson isn’t a chemistry specialist.

I’ve found respiration is one of the most important things for students to get right studying biology. The equations are so important, but many GCSE and even some weaker A-level biology students can’t instantly give them. I explain to students that they’re an instant grade boost. Here’s a worksheet and set of notes on one page on the most common respiration questions. There’s the word equations, a guide through the standard question about how your heart and breathing rate change with exercise, and there’s links to some recommended videos. Versions included for colour and black and white printing. Full mark scheme included with the worksheet. Remembering the equations for respiration is one of the last things I always go over with students just before their exams, because it’s such a morale booster to instantly get full marks on one of these questions. I will never forget what one student told me in 2021: “It came up! Exactly what you said, it came up!” This set of notes targets Edexcel 9-1 iGCSE biology and uses lactate as the standard term rather than lactic acid. I have a version targeted towards other GCSEs such as the AQA course as well. Questions consulted as models for answers included the 1B 2019 and 1BR 2020 papers and 2B 2017.

Worksheet on making copper sulfate crystals covering two pages for AQA 9-1 GCSE chemistry, versions in colour and in black and white for printing with a mark scheme. Covers removing the excess copper oxide and letting crystals form, and checked against a similar question on the 84621H specimen paper. There’s a link to a recommended video from Pearson. The content is divided over the two pages: the first page is more “directly on the topic” questions and could be used on its own for students at the time they cover copper sulphate or do the practical, the second page is more extension and for “final exam revision”: based on student questions and points that came up from discussing the video, I made the second page cover more synoptic questions making connections with other topics, like temperature and rate of reaction. Written targeting AQA but would be suitable for other exam boards. The worksheet is targeted towards building exam technique and written question skills, so doesn’t include a full practical method. Topic area: required practical 1 and 4.4 Chemical Changes > 4.4.2 Reactions of acids > 4.4.2.3 Soluble salts > Preparing a pure dry sample of a soluble salt from an insoluble oxide or carbonate. I also have a version for Edexcel iGCSE chemistry.

Worksheet on two pages on extracting metals using carbon (and tungsten), targeting the AQA 9-1 science and chemistry GCSEs in the C5 “Chemical changes” section of the course. Covers the reactivity series, unreactive metals, word and symbol equations, environmental impact, redox and tungsten extraction. There’s an in-depth mark scheme, diagram of a blast furnace and links to recommended videos. Update, September 2024: added version with the images tuned to print well in black and white (note that the emoji graphics appear in colour onscreen).

Notes on capture mark, release and recapture population estimates, suitable for courses including A-level biology and Edexcel GCSE statistics. Covering one page, the assumptions and the idea of a reciprocal are explained and there’s two model calculations.

Worksheet covering wave speed, frequency, and wavelength, on two pages, targeted for Edexcel 9-1 GCSE physics. Intended to provide a graduated scheme of work from definitions of wavelength, frequency, wave speed, time period, longitudinal and transverse waves to calculations and taking in unit conversion. There’s diagrams and a power triangles for the core wave equation to practice using and a mark scheme.

Notes on one page covering all the tests for cations for AQA 9-1 GCSE chemistry, including the precipitation equations. I’ve also included model equations, both complete and ionic, for the precipitation reactions, with examples for a +2 and +3 ion. Versions both in colour and in black and white for photocopying and links to videos of the tests.

One page revision notes for AQA explaining the idea of error bars. I include model answers for a range of types of question and explanation of what p < 0.05 means. I list a couple of past paper questions which have good questions to practice from, all from the current specification. AQA want you to say that differences are significant if error bars don’t overlap, even though in reality it’s more complicated than that. I clearly explain this and say that this idea shouldn’t be used if students go on to degree-level statistics. Questions and mark schemes consulted in writing these notes included: significant difference: 74022 2020 2.4 differences that are not significant: 74012 2019 1.2 range error bars: 74023 2017 2.5 no error bars: 74022 2020 7.2 probability and chance: 74021 2019 4.4 Update, 2024: Following feedback from a student, added scale to clarify that the error bar shows mean ± SD. Clarified that the comments on probability/significance are when comparing means (so e.g. wouldn’t apply to the chi-squared test).

Worksheet on homeostasis and thyroid function, covering thyroxine, TSH and nutrient deficiencies as well as revising homeostasis and negative feedback generally. This two-page worksheet has plenty of illustrations and diagrams to help students remember the topic. Targets the AQA 9-1 biology GCSE. There’s versions of the worksheet for colour and black and white printing and an in-depth mark scheme. Doing Edexcel GCSE? I have a separate version targeting that course specifically. 2024 update: fixed a glitch with question numbering and following feedback from students, added more space for writing down some answers.

You get a much better response explaining cyclic AMP when you draw it as a hat that makes enzymes happy and working harder when they wear it! One-page revision notes on cAMP for the OCR specification, combining the different places it’s used on the course (adrenaline receptors, ADH in the kidney collecting duct, lac operon of bacteria). Also has links to YouTube videos of some of the processes discussed. I’m thinking of expanding this into a larger resource covering this topic-contact me if that’s something you’d particularly want. It’s offered for free in the meantime.

This free resource shows how people tend to get their eye diverted by an eye-catching big diagram or graph or picture, and not read the text above it. I regularly show this to my students to help them understand that examiners write exams downwards, and that often the very start of the text before a picture or diagram hides vital information that they can easily skip over. It really helps them visualise what’s going on and the importance of looking everywhere for the information to solve questions. They often burst out laughing when they get the joke. This image was based on a popular meme distributed without copyright statement whose original author I have not been able to trace, so I’m making it available for free. A couple of different versions are included in colour and black and white.

Poster explaining what global warming causes and why climate change is so important, using clear, simple images. Could be useful for geography, biology, chemistry, other sciences and general citizenship lessons. Included is a version for students to fill in. I also have a poster on how to stop global warming which is also available for free. If your teaching prefers the wording “climate change” rather than “global warming”, I also have a poster saying this, content is otherwise identical.