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Grefintec's Shop

I set up Grefintec in 2012 and have successfully been making a wide variety of online teaching resources since then, primarily for the training of practitioners working within the early years and playwork sectors. However, my day job is a biology teacher so I also make resources for myself and these are the ones I share, for free, in my TES shop. I hope that you enjoy them and find them useful,

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I set up Grefintec in 2012 and have successfully been making a wide variety of online teaching resources since then, primarily for the training of practitioners working within the early years and playwork sectors. However, my day job is a biology teacher so I also make resources for myself and these are the ones I share, for free, in my TES shop. I hope that you enjoy them and find them useful,
Print Your Own Stage Micrometer

Print Your Own Stage Micrometer

Whilst I do not claim that these are of the quality you would purchase from a science shop, they are certainly good enough for use in class. Obviously quality is also dependent upon your printer and please only print on printable OHP acetate film . If you use the incorrect type it can melt inside your printer and wreck it. Method Print out on printable transparency acetate film 24 micrometers per A4 sheet Cut out and use directly (no need to put on a slide) Each interval is 500um
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Big Money!

Big Money!

Coins for early maths skills development. Just print out and stick the appropriate ‘head to tail’ and laminate. It may not feel like the real thing but they look the same albeit on a bigger scale.
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Wonders of the Universe Questions

Wonders of the Universe Questions

A set of questions and answers written to go with a class watching the ‘Messengers’ episode (Ep 4) of Brian Cox’s ‘Wonders of the Universe’ series. Links into topics Light and Sound. Helps to keep engagement throughout the film. A good lesson for end of term or a cover lesson.
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Haemoglobin: True or False Plenary

Haemoglobin: True or False Plenary

Created as a plenary to a Year 12 lesson on haemoglobin. Comes with full answers, written in the notes section of the PowerPoint. Also comes with a student worksheet for them to have a copy of the questions/answers with space to make amendments to questions which are found to be false.
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KS3 Materials and Everyday Chemistry Revision Mat with Answers

KS3 Materials and Everyday Chemistry Revision Mat with Answers

Revision mat created for use with a unit delivered at my school entitled ‘Materials and Everyday Chemistry’. It is a rather composite course including elements of ‘How Science works’ in addition to ks3 chemistry Material covered includes: Definitions, diffusion, hydrocarbon, pH, graphing and tabling skills, calculating percentage increase and decrease, fuel triangle, experimental accuracy and uncertainties.
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The Chemical Spy

The Chemical Spy

A practical delivered as part of a KS3 topic entitle 'Materials and Everyday Chemistry'. Students carry out two experiments investigating heat triggered invisible ink and pH triggered invisible ink.
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3.3.1 Surface Area:Volume Ratio - Fick's Law

3.3.1 Surface Area:Volume Ratio - Fick's Law

A worksheet which explains how Fick's Law is calculated and uses alveoli as an example, illustrating how rate of diffusion would change if surface area and/or exchange surface thickness is changed. Includes extension question with answer
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Plant Hormone Dominoes (with answers)

Plant Hormone Dominoes (with answers)

A set of dominoes to use as a plenary or as a revision resource. Students have to cut out the dominoes and then match up the questions with the answers. All are from the GCSE biology topic 'plant hormones'.
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Variation and Classification Crossword

Variation and Classification Crossword

Keywords linked to variation and classification. Developed for use with a Ks3 science class but could be used for GCSE. A great way to settle a class whilst consolidating learning of definitions linked to the topic.
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The Twelve Days of Science (Festive Homework)

The Twelve Days of Science (Festive Homework)

Encourage independent learning with this 'Twelve Days of Christmas' template. Simply add text to the (bacteria/virus) baubles and ask your students to choose what they want to do. How you deliver this is entirely up to you. For example you could ask them to do a minimum of two home works. In order to position the text boxes over the baubles I have just used the number '1'. This means that they can be easily edited and personalised by you. #festive; #Christmas; #independent learning #homework
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Analogy: Effect of Non-Competitive and Competitive Inhibitors on the Rate of Reaction

Analogy: Effect of Non-Competitive and Competitive Inhibitors on the Rate of Reaction

Analogy for Competitive and Non- Competitive Enzyme Inhibition Rate Graph Situation: Preschool birthday party game 'musical chair's'. The preschoolers are the substrate, the chairs are the enzymes. Competitive Inhibition Some of the parent's want to play. But the more preschoolers there are the less likely the dads are going to get a seat when the music stops. Eventually there will be a point when they are out competed for the seats because there are so many preschoolers Non Competitive Inhibition The preschoolers have older siblings who are too cool to be at a party like this. When the music starts they run around pushing the chairs over so they can't be used in the game anymore. It doesn't matter how many preschoolers there are they can't ever fill all of the chairs because some are out of action.
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AfL Plenary triangle

AfL Plenary triangle

A quick and simple way to assess students learning and also find out what their aims and needs are for next lesson.
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AfL: What I knew then...What I know now - A simple way to demonstrate progress.

AfL: What I knew then...What I know now - A simple way to demonstrate progress.

Formative Assessment/Assessment for Learning 1. At the start of a new topic, get your pupils to stick this in on the first page. 2. Ask them to write everything that they already know about the topic in the centre square. 3. Then either mid way through the lesson, or mid way through the topic, turn back to this first page and ask the pupils to write everything that they know in the middle rectangle - using a different colour ink really highlights their new learning. Also at this point they can work as a 'talking pair' and expand on this. 4. At the end of the topic, return to this first page and complete the final rectangle, again using a different colour is a good idea, as is incorporating 'talking pair' information. A simple way to let both you and your students know what progress they have made.
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Magnetism Revision Crossword (KS3)

Magnetism Revision Crossword (KS3)

I designed this crossword as a settler/starter task for a KS3 class (year 8 ) who were doing their third lesson on magnetism. Keywords: poles, induced, fieldlines, plotting compass, alloy
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