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Session 1: Excuse me, are these your teeth?Science curriculum area: Animals Including Humansi. identify the different types of teeth in humans and their simple functionsWorking Scientifically (LKS2)i. asking relevant questions and using different types of scientific enquiries to answer themii. using straightforward scientific evidence to answer questions or to support their findingsTeaching ObjectivesTo use straightforward evidence to answer questions about the functions of human teethKey Vocabulary teeth, incisors, molars, canines, jaw, evidence, digestion, chew, saliva.ResourcesA dental Expert (or an adult dressed as an expert), Teeth PowerPoint, mirrors, clay and clay boards, apples (cut into quarters), independent activity sheet, guided activity sheet. Weblinks - Video about our teeth; - Video explaining the differences between the teeth of different animals.Whole Class: Invite a local dentist or dental nurse to come to speak to the class about teeth - including how to keep them healthy, why they need to be healthy, what we need our teeth for and why we have different types of teeth in our mouth. If an expert isn’t able to come in, then prep an adult from the school to be the expert (they can follow the PowerPoint as a prompt).Before the session, hang ‘healthy teeth’ posters around the classroom, have a tall angled lamp (to pretend to look at someone’s teeth) and create a ‘waiting room’ by moving the chairs and tables. When chn arrive, ask them to wait in the waiting room, their appointment with the dentist will be next. Call them all in for a group appointment. If possible have another adult sitting in the dentist chair, leaning back waiting to have their teeth examined. “Well done for attending your dental health appointment. We’re going to take a moment to learn about our teeth.” Either allow the expert to present their information or you (or another adult) are the expert and you can move through the Teeth PowerPoint. After watching the video clip on the final slide explain what they will be doing for their independent task. ActivityChn are all working on the independent activity at the same time – during this time take groups of 6-8 to work through the guided session until everyone has completed the guided and the independent activity. IndependentChn make a model of the bottom row of their teeth using clay. They can use mirrors to see inside their mouths, they can ask a partner to describe the shape of their teeth, they can move their tongue along to feel the shapes and count how many there are. They should count how many incisors, canines and molars they have and complete sentences about the job of the different teeth (see session resources – easy page 1, medium page 2).GuidedShow the chn the teeth of different animals (see session resources – enlarge images and have enough copies for one each). Which animal do they think the teeth belong to? Encourage a discussion where they use what they know about what animals need their teeth for, and the diet of different animals to answer the questions. Explain that they are using evidence to answer questions. A lot of scientific questions can be answered by simply observing and using the clues in front of them. The images are of a tiger and a cow. Whether an animal is meant to be a carnivore, herbivore or an omnivore will determine what their teeth will be like. We are meant to be omnivores so our teeth will need to be able to rip flesh and cut plants. A big cat will need use their teeth to hold on to their prey and then to rip the flesh from the bones. They have molars but hardly chew their food, instead they bite it into smaller chunks and swallow it. PlenaryWatch the BBC clip about teeth. Explain that our teeth are the very first part of the digestive system. On a display board with the heading ‘Digestive System’ put the word ‘Teeth’ at the top. Our new science block is all about the digestive system. What can anyone tell us about the digestive system? Can they name any parts – stomach, intestines. Jot down their responses. This can form part of the initial assessment. Put the word ‘Faeces’ at the bottom of the display board. We are going to find out about the stages between chewing our food and doing a poo in the next few sessions. In the final session, they will become the teeth experts and will explain all about teeth in a whole school assembly. OutcomesChildren willListen to an expert talk about teeth and how/why to look after themDiscuss what they know about how to keep our teeth healthyConsider why our teeth are different shapes and understand that they have different functionsUse evidence from their knowledge of an animal’s diet to identify which teeth belong to which animalCompare the teeth of a herbivore and a carnivore and consider why they are different ................
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