Snappy Science A selection of Sc 1 activities to help your pupils develop their scientific enquiry skills in relation to APP Green Plants and the Environment 1. 2. 3. 4. 5. Growing plants in the dark. (AF4: predicting) Photosynthesis (AF4: predicting/ plan how to collect data) Photosynthesis (AF5: thinking about spooky results) Habitats (AF4: asking a planning question) Tadpoles (AF5: Looking for spooky results and suggesting improvements) 6. Function of the Leaf (AF5: Describe what has been found out with reasons) 7. 8. Microbes (AF4: Asking a question and plan how to collect data) Investigating microbes (AF4: Plan how to collect data – identifying variables) 9. Mouldy Sandwiches! answer a question) 10. (AF3: Using books and ICT etc to How many worms are there in the field? (AF3: Suggest imrpovements) 1. Green Plants – Growing in the dark AF4: Planning Investigation WALT: Predict what might happen A green plant was put in a dark cupboard for three weeks. It was given water to help keep it alive. Ashgar thought that the plant might die as the plant did not have any light to help it make food even though it did have water. What do you think might happen to the plant and why? How could you test your prediction? 2. Green plants (photosynthesis) AF4: Planning Investigation WALT: Predict what might happen (share with our friends what we think might happen and why) Activity: Pupils work in small groups to come up with ideas about what might happen to the green plant and why. Help the pupils compose their sentence by saying: ‘ I think the green plant in the dark cupboard might….. because …..’ it is the quality of the because that counts! Teaching point: Pupils should have some idea about the fact green plants make their own food. They do not get food from the soil (only water and minerals). Without light green plants will not be able to make food and so their health might be compromised if they did not have light. Challenge: Collect data Ask pupils to explain how they could carry out their test (what to measure, how to keep it fair, what are the variables, what will be kept the same Looking for surprises Ask the pupils to talk about what happened to Ashgar’s plant and what was surprising about it. Encourage the pupils to use descriptive language in their explanation Once the pupils have articulated what the surprises were ask them to share reason why the green plant turns yellow (no sun = no green pigment; tall = plant trying to reach sun, unhealthy = no sun: no food: no energy: unhealthy) 3. Green plants (photosynthesis) AF5: Working critically with evidence WALT: Think about spooky results A green plant was put in a dark cupboard for three week. It was given water to help keep it alive. Ashgar thought that the plant might die as the plant did not have any light to help it make food even though it did have water. After three weeks the plant was taken out of the cupboard and Ashgar noticed that the plant was still alive but very week. The plant had turned yellow and had grown very tall and thin. Ashgar was very surprised about the results. What do you think he told his friends about what happened and how did he explain it? 4. Investigating habitats: AF4: Planning Investigation WALT: Ask a planning question Activity: Holly collected some woodlice and put them into two connected dishes. The light was blocked out of one of them. When Holly went back to look at her woodlice she noticed that they were all in the darkened dish. Concept: Woodlice prefer to live in dark moist environments (hence found under rocks/rotting wood). Children could suggest: How do you think the amount of light affects where the woodlice go? Why do you think the woodlice go to the darkened dish? Moist Paper Tunnel Black paper 5. Tadpoles AF5: Working critically with evidence WALT: Look for trends in results Look for spooky results (errors and anomalies) Suggest improvements Activity: In the spring Tom and Annie decided to go pond dipping for tadpoles. Grandad knew exactly where to go, Turtle pond at the edge of the wood. After ½ hour, they had caught only 15 tadpoles. Grandad said, ‘It’s not like it used to be, when I was a boy’. 1 2 3 1. 2. 3. 1960 86 80 81 1970 74 70 79 1980 49 7 45 1990 32 24 49 2003 15 19 17 what do the results tell you about the number of tadpoles? Why do you think the scientists tested 3 times? Why do you think the 1980 results are surprising? 6. Function of the leaf AF5: Working criticially with evidence WALT: Describe what has been found out with reasons Activity: Read the scenario to the whole class or group. Look at the results and ask pupils to find a pattern. Discuss questions in small groups. Share ideas. Summer took the class sunflower plant home for half-term. Her little brother, Liam, cut off almost all the leaves one day. When she took the plant back to school the class thought it had grown very little during the holiday. Week 2 Week 3 Week 4 1 cm 5cm 9cm 13cm Half term Week 1 Week 6 15cm Were the children correct? How do you know? Can you predict how tall the plant will grown during the next few weeks? What do you think is affecting the plants growth? How could you carry out a fair test to check your ideas/thoughts/bright ideas? Teaching points: draw attention to pattern of growth children should know that green plants make their own food, using their leaves plants do not get food from the soil (only water & minerals) 7. Microbes AF4: Planning Investigation (working back through an investigation and the results). WALT: Asking a question Plan how to collect data Activity: Lauren watched her mum unpack the shopping. She wondered why she kept most things in the fridge or the freezer. She decided to carry out an investigation. She put a piece of food in each of 12 containers. She put the containers in places with different temperatures and left them for 2 weeks. What question do you think Lauren was trying to answer? How did she keep her test fair? What variable will she be measuring? Container Freezer Temp –5C 1 2 3 0 0 0 Fridge temp 5C 10 15 10 Room temp 20C 60 70 20 Airing Cupboard Temp 40C 90 95 95 % What do you think these results tell us about how to keep food fresh? Why did Lauren carry out the test using 3 containers in each place? Lauren noticed 1 of her results was a bit of a surprise. Which one do you think it was? Why do you think this might be? 8. Investigating: microbes AF4: Planning Investigation WALT: Plan how to collect data: identify the variables Teaching Point: Pupils learn what to do with the variables once they have identified them. Only the experimental variable should be changed. All other variables should remain the same. What causes mould to grow? Activity: Give out the worksheet to each pupil. Read through and complete the worksheet. (‘It’s mouldy again’) Discuss answers: Variables to remain the same: Amount and size of bread Type of bread Length of time in conditions Discuss with the class, what mould is and the conditions it needs to grow. 9. Mouldy Sandwiches! AF3: Communicating and Collaborating WALT: Using books, ICT etc to answer questions. Teaching Point: Ensure that pupils understand the concept/role of microbes in decomposition/decay of dead organisms. Activities: Use the scenario: “Lunchbox” Mrs Inwood, tidy teacher, was tidying her classroom at the end of term. Behind the PE kit tub she found a child’s lunchbox. Inside she found a green and very smelly sandwich. She wondered whether it belonged to her present class or to someone from last year’s class. Discuss ideas and challenge the children to find out what processes are used to keep different types of food fresh. It’s Mouldy Again! Dough!! Which conditions affect the speed at which mould will grow on bread? Window Sill Cupboard Freezer Sealed Container Which variable has been changed in this investigation? List all the variables which must be kept the same. 1 2 3 ………………………………. ………………………………. ………………………………. 10. How many worms are there in the field? AF5: Working Critically with evidence WALT: Suggest improvements - Show that repeated measurements improve reliability Teaching point: If pupils take isolated measurements then they may give the wrong impression. This activity will show that repeating the number of measurements will give more reliable results. Activity: Give copymaster A field is shown 10m x 10m with the positions and results of 5 random quadrats. Each quadrat shows the number of worms counted by a group of pupils. A results table is shown and a sample calculation shows the atypical number of worms in the field estimated using quadrat 1. Ask the pupils to work out the number of worms in the field if the average number of worms is 23 (100x23=2300) Inform the class that the more we repeat our readings the more reliable and representative the results become. Challenge: Ask how the survey could be improved further. Links to plenary: Discuss why repeated readings give more reliable results. How many worms are there in the field? A group of pupils tried to find out how many worms there were in the field They placed 4 metre rulers into a 1m by 1m square called a quadrat They repeated this 5 times The diagram shows the field and results of each count : area of lawn 10mx10m = 100 square metres Quadrat number 1 2 3 4 5 Total 5 Number of worms (1m square) 5 35 4 30 40 114 Average number per quadrat = 114÷5= 22.8 rounded to 23 If the pupils had used only the results of quadrat 1 then they would estimate that 5x100 worms (500) were in the field. There is an average of 23 worms in 1 square metre. Work out how Many worms are estimated in the whole field. Light, sound, electricity and Earth & Beyond 1. Light & transparency (AF4) plan to collect data and ask planning questions 2. Light & transparency (AF5) thinking about spooky results 3. Light & transparency (AF4) plan to collect data : What are we measuring or observing? Plan to collect data : What might affect what we are observing or measuring? Ask a planning questions 4. Light(AF 4) Gather evidence 5. Light (AF 5) describe what has been found out with a reason 6. Light (AF 5) using evidence to explain 7. Light – shadows (AF 4) asking planning questions 8. Light – shadows (AF 4) asking planning questions 9. Light – shadows (AF 5) Describe what has been found out with reasons 10. Light –shadows (AF 4) asking planning questions & predicting 11. Light – shadows (AF 3) communicating scientific ideas 12. Electricity AF 4 planning to collect data: what might affect what we are measuring 1. Light – Transparency WALT: Planning (AF 4) Collect data : What are we measuring or observing? Collect data : What might affect what we are observing or measuring? Ask a planning questions Predict what might happen Gather evidence 2. Light - transparency Working with evidence (AF5) : Think about spooky results (errors and anomalies) Teaching Points: In this activity, children are being asked to understand that different materials will allow different amounts of light to pass through them. They need to understand the words opaque, translucent and transparent and be able to apply them as properties of some everyday materials. They will need to be aware of the importance of fair testing and be able to draw conclusions from results. Following this, they need to be able to compare the results from two separate investigations in order to draw an overall conclusion. Activity: Provide each pair with a copy of the investigation. Discuss the experiment – identify which information is relevant. Discuss with the class what possible questions Chardonnay is trying to answer. A good example would be ‘Which material allows most light to pass through ?’ Allow children time to discuss what they are going to observe or measure, the variables they have identified that might change what they are observing or measuring, which variable needs to be kept the same. Come up with a class list of possible responses. In groups encourage pupils to produce a planning questions: example: ‘what do you think might happen to the amount of light the materials lets though if we change the type of material and keep the same thickness, the same distance from the light source and the same type of light source?’ Explain to the children that results are not always what might be expected. Such results should be identified and if possible, explained. Reinforce the need to carry out a test more than once. 3. Light Transparency WALT: Collect data : What are we measuring or observing? Collect data : What might affect what we are observing or measuring? Ask a planning questions Chardonnay was shining a torch through different materials – glass, tracing paper and newspaper. She used a light sensor to measure the amount of light which passed through each one. The more light which passes through the material, the higher the percentage which was recorded on the sensor. Encourage the pupils to identify what is being measures or observed Give 3 variables which might change what is being measured Test 1 Test 2 Test 3 Material A 55% 52% 57% Material B 30% 60% 28% Material C 100% 100% 100% The pupils need to come up with a question that sound like: ‘what do you think might happen to the amount of light the materials lets though if we change the type of material and keep the same thickness, the same distance from the light source and the same type of light source?’ 4. Gather evidence Chardonnay thinks that one of her results is not accurate. What did she mean? If Material C was glass, which materials were used in test A and test B? Why did she perform the test 3 times? Chardonnay then performed a separate test using only tissue paper. Here are her results. Test 1 Test 2 Test 3 1 Sheet 58% 61% 65% 2 Sheets 42% 39% 41% 5 Sheets 10 Sheets 9% 7% 12% Complete the table to show the possible results for 5 sheets of tracing paper. 5. Describe what has been found out with reasons Chardonnay concluded that after looking at the results in both tables, tissue paper was more transparent than tracing paper. Do you agree? YES/NO Explain your answer. 6. Using evidence to explain Using a combination of the results ( for the numerical value) and their own knowledge of the properties of materials to explain which materials A and B were. Using given data, can they predict other results which fit into the expected pattern. Discuss how the results from both investigations can be used to compare properties of translucency of materials. Challenge: What would happen to the scores if more than one sheet of glass was used? 7. Investigating Shadows WALT: Ask planning questions Teaching point: It is important to build on Key Stage 2 investigational skills and develop them into those appropriate to Key Stage 2. Activity 1 is to frame the question which has been scientifically investigated by another pupil Brooklyn. It is important for the pupils to be aware that questions need to be in a form suitable for scientific investigation. Activity: Children will be given part of an investigation about the apparent movement of the sun over a period of 6 hours. Ask the children to look at the table of results and write a question they think Brooklyn has tried to answer by doing this investigation A good question would be “How does the length of shadow change due to the apparent movement of the sun?” “Do shadows get longer as the sun’s apparent position changes?” this type of response may be given but falls short of what Brooklyn was investigating. Discuss with the class the importance of beginning with a suitable question when planning an investigation The first part of the investigation shows a diagram of Brooklyn’s investigation, together with a results table. The pupils analyse information given to enable them to work out what was the questions Brooklyn was trying to answer in his investigation. Challenge: Ask pupils to give 3 ways that Brooklyn could have made sure that his investigation was a fair test. Links to Plenary: Discuss the importance of beginning an investigation with a suitable question which can be tested. 8. Investigating shadows: asking planning questions Brooklyn measured the length of the shadow at different times during the day. For each time he used the same shadow stick in the same location He changed The time when he measured the shadow Encourage the pupils to come up with a questions such as; ‘what do you think will happen to the length of the shadow(cm) if we change the time we measure the shadow and keep the same length and width stick and keep it in the same position ’. 9. Describe what has been found out with reasons Look at the evidence below: Come up with a sentence that contains the words; The evidence below shows us…………. Teach the pupils the er….er rule. E.g. The earlier the time of day the longer the shadow because ……. LENGTH OF SHADOW (cm) TIME OF DAY 1ST DAY 2ND DAY 3RD DAY 9am 80cm 85cm 82cm 10am 50cm 60cm 57cm 11am 30cm 32cm 30cm 12pm (noon) 20cm 24cm 22cm 1pm 30cm 35cm 32cm 2pm 50cm 45cm 47cm 3pm 80cm 78cm 82cm WALT: 10. Asking planning questions Predict what might happen Shannon made a shape out of card and shone a torch towards the shape. She measured how long the shadow was in relation to where she placed the torch. Shannon recorded it in her results chart. What do you think Shannon was trying to find out? What question do you think Shannon was trying to answer: The pupils might say: what do you think might happen to the (darkness/size/shape/sharpness) shadow if we change the distance the torch is from the card and keep the same size of card and the same torch. Why do you think the shadow….. How can we make the shadow ….. 11. Communicating scientific ideas What do you think Shannon’s results table might look like? 12. Investigating circuits WALT: Planning to collect data – what might affect what we are observing Teaching point: The pupils should analyse the given information and identify as many variables which affect the brightness of the lamp (bulb) in a circuit as possible. Activity: Encourage pupils to talk about the fact they will be observing the brightness of a lamp Ask the pupils to write down the variables which affect the brightness of a bulb in a circuit, they may include : Length of wire Number of bulbs Number of cells Thickness of wire Power of the bulb Voltage of cell Challenge: Using the variables identified by class and teacher, how could class 6 make every circuit comparable with those of each group. Links to plenary: Discuss importance of identifying all variables before planning an investigation. Investigating Sound AF4: Planning Investigation WALT: Suggest appropriate questions that are testable Teaching point: It is important to build on Key Stage 2 investigational skills and develop them into those appropriate to Key Stage 2. Activity 1 is to frame the question which has been scientifically investigated by another pupil Gemma. It is important for the pupils to be aware that questions need to be in a form suitable for scientific investigation. Activity: Children will be given part of an investigation about sound travelling through different materials Ask the children to look at the table of results and write a question they think Gemma has tried to answer by doing this investigation A good question would be “Does the type of material affect the level of sound heard?” “Can the sound travel through the material?” this type of response may be given but falls short of what Gemma was investigating. Discuss with the class the importance of beginning with a suitable question when planning an investigation The first part of the investigation shows a diagram of Gemma’s investigation, together with a results table. The pupils analyse information given to enable them to work out what was the questions Gemma was trying to answer in her investigation. Volume of sound Gemma measured the level of sound she could hear when the radio was wrapped in different materials. Zero being no sound and 5 being most sound. For each time she Used the same sound source (radio) Used the same person who was listening to the sound Recorded the volume level each time the sound could be first heard She changed The materials to wrap around the radio LEVEL OF SOUND (VOLUME BUTTON 0-5) M 1ST TIME A T W E O O R D N I E A W L S 2ND TIME 3RD TIME 4 4 5 3 3 3 2 2 B 1 P U A B P B E From the information L R E investigated. given, write down the question which Gemma W RWhat do you think what will happen to the …………………..if we A change the ……………………and keep the same…………………..? P Challenge: Fair testing Ask pupils to give 3 ways that Gemma could have made sure that her investigation was a fair test. Earth & Beyond – Sun on the move? AF4: Planning Investigation WALT: Plan how to collect data Activity: During the first lesson at 9:00am Jill had the sun in her eyes in class. In the afternoon the sun was shining in the window behind her (she had not moved places). Scientists believe that it is the earth which is moving and not the sun. How could you prove this is true