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This activity comprises of an interactive spreadsheet model that allows you to change the value in the yellow coloured cell to represent a percentage of noise added to a signal. It allows you to see what happens to both analogue and digital signals with the same amount of noise side by side. There is a worksheet to summarise the difference between the two kinds of signal and also an activity for pupils where they plot out signal plus noise by hand - ideal for a flipped learning (prep) approach where pupils do this in advance of the lesson before discussion in the lesson.

This activity follows on well from the Greenhouse effect starter. Based on interpreting data about planets in the solar system, it leads learners to the conclusion that Venus is hotter than it should be due to CO2. There are two levels of activity, the more demanding one explores the role of photons/light/radiation in heating planets. This activity was originally designed for 21st Century Science unit P2. Please note that this is a non-editable resource. A premium editable version is also available at: /teaching-resource/resource-11858634 Key words: greenhouse effect, atmosphere, CO2, carbon dioxide, global warming

In this activity, pupils are at the centre of model that shows how the Moon orbits the Earth and how this leads to the phases of the moon appearing. A description of how to do this is shown. There are three versions of the worksheet (with slighly different levels of demand and scaffolding) for recording the appearance of the moon model is included, with answers. Please note that the main purpose of the activity is the conceptual understanding of the phases of the moon (as we can see different amounts of reflected sunlight at different times of the month). The vocabulary is intended as an additional extra. There are also links to a NASA video showing the phases of the moon, the first 30 seconds of which could be used to hook learners. A second video showing the experiment is also linked. Please ensure that you have carried out a full risk assessment before carrying out any practical activity.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P5, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P4, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

These flashcards, when printed out back-to-back and then cut out will produce a series of double sided flashcards showing the composition of particles in the standard model. They are good as an independent learning tool or revision activity. They could be used in preparation for the 'Identify the particle rolling slideshow Instant Engagement / Retrieval - available on TES Resources at: /teaching-resource/resource-6341196

This is a worksheet based activity that includes some higher order thinking to explore the ideas around energy transfer in simple food chains. Two versions are included, one with legacy GCSE grades, the other without. (please note that grade indications are only approximate). Why not try getting learners to choose a selection of questions to answer (e.g. do Q1-4 or Q3-8) An answer sheet is included. This resource was originally designed for OCR 21st Century Science unit B3. A premium editable version of this is available at: /teaching-resource/-11858631 Keywords: energy, transfer, food chain, efficiency

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P5, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P5, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on OCR 21st Century Science Specification, although could be used with other exam boards. Clicking through the show reveals answers one a time. There are two slightly different activity sheets for differentiation - one has key words, the other without. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

These are a sequence of PowerPoint slideshows designed to support the retrieval of the composition of particles in the standard model. They can be used as an instant engagement task (rolling on screen as students enter the room for immediate engagement with learning). They can also be used as a retrieval quiz. The slideshows are essentially the same task (with rearranged slides) but get progressively more demanding as the changeover of slide gets faster (as the numbers on the titles of the slideshows in brackets increase). Start the students with (1) and then as they get faster, use the more demanding versions. This resource goes well with the particle flashcards also available on TES Resources at /teaching-resource/-6341199

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on OCR 21st Century Science Specification, although could be used with other exam boards. Clicking through the show reveals answers one a time. There are two slightly different activity sheets for differentiation - one has key words, the other without. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

This resource is a collection of 6 slightly different see-saw balances that can be used with learners to help them develop the skills to weigh up an argument. The idea is that students will list reasons on both side of an argument (e.g. Should we have Nuclear Power?). They then use this to help make a decision. The scoring column on some sheets allows learners to score each argument out of a maximum of say 3. Add the scores on each side to see which has the stronger argument. This also includes phrases to support a more detailed conclusion. This was inspired by 21st Century Science.

Keywords: Efficiency, calculation, graph, skill, explain, justify, MAT. This activity is designed to stretch the most able learners with some questions and tasks related to calculating efficiency. There are some demanding questions involving handling data and using graphs to make predictions. This was designed as a home learning task to consolidate learning about efficiency. It would also make a suitable starter for AS/A level. An answer sheet is included with suggested marks for each question.

This is a short standalone activity linked with the topic of climate change, global warming and icecap melting. It is intended to develop higher-order thinking skills and understanding of data. It aims to provide an opportunity for cognitive conflict and discussion. There are two ways this task can be attempted: Allow the students to work through the first two set of tasks sequentially. Hand out only the sheet with a triangle in the top right of the page. When this is completed, hand out only the sheet with the square. Finally, when this is completed give out the third and final sheet with questions 4 onwards. Alternatively… One half of class is given the first sheet, marked with a triangle. The other half is given the ones marked with a square. Pupils work on their own sheets independently. After a few minutes, pupils who have completed different sheets pair up. They compare their sheets and answer the questions on the third sheet together. When this was tested, pupils responded well to the tricky questions.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P2, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

This activity contains a powerpoint with graded questions & answers and matching pupil activity sheets, designed to be used at the end of a lesson and/or the start of the next lesson to review previous learning. The questions are based on the previous OCR 21st Century Science Specification unit P4, although could be used with other exam boards. Clicking through the show reveals answers one a time. These reduce to A5 easily, the ideal size for most pupils. Please note grades are approximate.

These are a sequence of powerpoint shows designed as an instant engagement task (rolling on screen as learners enter the room for immediate engagement with learning). Learners write down the prefix that represents the power of ten multiplier. They are essentially the same task (with rearranged slides) but get progressively more demanding (as the changeover of slide gets faster) as the numbers in brackets increase. Start the students with (1) and then as they get faster, use the more demanding versions.

Keywords: digital, analogue, encode, decode. Notes: This activity helps learners compare how a simple string telephone works against a more complex digital system. Get the students to make string telephones using paper/plastic cups and lengths of string before attempting to complete the sheet. This helps explain an abstract idea by building up from a very hands on simple (more concrete) example. It really engages learners of all abilities. There is an activity sheet and a guidance sheet with answers. This was originally designed for OCR 21st Century Science unit P2

This worksheet is useful for student to summarise information about the EM Spectrum, It can be used as an information gathering tool or to sum up key points about the spectrum. It could also be used for independent learning in school. It goes well with the activity EM Spectrum sort cards. There are three slightly different sheets that increase in demand from (1) to (3). This resource is part of a sequence with the following three other resources: This resource EM spectrum sort cards /teaching-resource/resource-6341302 IR remote control /teaching-resource/resource-12952897 UV Washing powder /teaching-resource/resource-12952892